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Re:Toyota testing improved solar roof for EVs that can charg... by hwillis on Friday July 05, 2019 @02:44PM (#20364775)
> The extended range is nice and all, but if somebody makes a car that can run the AC without running/draining the battery while it's parked, even if it's just a little to keep the car interior at 35°C or so, I would, without exaggeration, buy it the day it's released here.

Tesla's dog mode does this. Draining the battery isn't really something to worry about; AC uses <300 watts over long periods (turns on and off at <1 kW). Leaving it on for 8+ hours you're talking about <5% capacity loss, at a cost of <50 cents. For short trips you could leave the AC on full blast without even noticing a drop.

Re:Toyota testing improved solar roof for EVs that can charg... by p1mrx on Friday July 05, 2019 @03:48PM (#20365291)
It looks like the Hyundai Kona EV has a Utility Mode that works similarly (the headlights are off, the vehicle is locked in park, and you can run the AC indefinitely.)

However, based on this thread, utility mode requires the key fob, so someone could just break a window and steal the car. I wish manufacturers other than Tesla would think about these use cases:

https://www.insideevsforum.com/community/index.php?threads/u...

Re:Toyota testing improved solar roof for EVs that can charg... by timothyb89 on Friday July 05, 2019 @05:21PM (#20365976)
It was mentioned later in that thread, but the Kona EV also lets you control the AC remotely via its mobile app without leaving the keys in the car. I don't know if it'll run indefinitely, though; my old Chevy Volt would turn off remotely started climate control after 15 minutes or so, and I haven't tried in the Kona yet.

That said, even if it is time-limited, 15 minutes is usually enough to cool down the car without leaving the AC on all day.

Re:Toyota testing improved solar roof for EVs that can charg... by p1mrx on Friday July 05, 2019 @09:46PM (#20367213)
Any time limit defeats the point. An electric car isn't just a car without gas, it's a climate-controlled room you can put anywhere.

As global temperatures rise, there are places becoming increasingly uncomfortable to live in. There may be cases where it's cheaper to wait out the hottest days in your car, instead of retrofitting a cooling system onto a building.

Re:Toyota testing improved solar roof for EVs that can charg... by temporaryvector on Friday July 05, 2019 @02:52PM (#20364833)
I'm not sure how true that would be in extremely hot weather, but it is probably the only reason I'm considering a Tesla if it ever comes to my city, my commute is really short so even if it cut 200 miles off the range it'd be worth it for me.

Having a car with remote start alleviates the problem a little bit, but I'd rather not run an ICE engine while I'm not in the car for obvious reasons.

Re:Toyota testing improved solar roof for EVs that can charg... by hwillis on Friday July 05, 2019 @02:59PM (#20364890)
Even on constant full blast with the smallest battery Tesla sells, it's only gonna use ~2-3% per hour. Over 8 hours that would be 44 miles off the 220 mile range.

> but it is probably the only reason I'm considering a Tesla if it ever comes to my city

Hmm, Telsa should be pretty reachable. Perth and El Paso look like some of the only neglected hot cities.

Re:Toyota testing improved solar roof for EVs that can charg... by temporaryvector on Friday July 05, 2019 @03:02PM (#20364916)
I don't live in the US, as far as I'm aware there's only one Tesla store in my country and it's nowhere near me.
Re:Toyota testing improved solar roof for EVs that can charg... by hwillis on Friday July 05, 2019 @03:10PM (#20364983)
I figured- Perth is in Australia. If you're in Mexico you're pretty screwed, as is... South America, Africa, and most of Asia. You can check the map if you like!

https://www.tesla.com/findus?v=2&bounds=67.51085725091038%2C...

Re:Toyota testing improved solar roof for EVs that can charg... by temporaryvector on Friday July 05, 2019 @03:18PM (#20365073)
Mexico. I'm actually surprised there's one charging point in my city. I'd expect there to be none.

I'm pretty hopeful that we'll either get Tesla in a couple of years or other manufacturers will come out with something.

Re:Toyota testing improved solar roof for EVs that can charg... by IanCal on Friday July 05, 2019 @03:49PM (#20365292)
It seems that they deliver, if I'm reading the pages right. Not sure what being further away means for servicing though.
Re:Toyota testing improved solar roof for EVs that can charg... by cortesoft on Friday July 05, 2019 @05:06PM (#20365903)
What do you mean by 'if it ever comes to my city'?
Re:Toyota testing improved solar roof for EVs that can charg... by BurningFrog on Friday July 05, 2019 @05:14PM (#20365941)
Yeah, can't you drive Teslas anywhere?
Re:Toyota testing improved solar roof for EVs that can charg... by austhrow743 on Saturday July 06, 2019 @03:31AM (#20368474)
I wouldn't want to own a car that can't be repaired locally.
Re:Toyota testing improved solar roof for EVs that can charg... by taneq on Friday July 05, 2019 @09:21PM (#20367127)
Sure, I mean they float, right?
Re:Toyota testing improved solar roof for EVs that can charg... by Zenst on Friday July 05, 2019 @06:00PM (#20366231)
Wouldn't chucking a bucket of water over the car with the evaporation help cool the car down quicker initially? Along with least reducing the amount of time needed to run idle for cooling.

Though this would depend upon the humidity, would not work in high humidity and equally work better in low humidity.

Re:Toyota testing improved solar roof for EVs that can charg... by BurningFrog on Friday July 05, 2019 @10:24PM (#20367353)
Sure, but for that to work you have to carry around buckets of water.
Re:Toyota testing improved solar roof for EVs that can charg... by Zenst on Friday July 05, 2019 @10:33PM (#20367388)
Not in the morning when you're at home.
Re:Toyota testing improved solar roof for EVs that can charg... by todd8 on Friday July 05, 2019 @05:28PM (#20366021)
This definitely makes Teslas more attractive to me. About half the homes on my (short) street have Teslas. I didn't know how little hot weather affected the battery usage. I had mistakenly assumed that A/C would have a greater negative impact on range.
Re:Toyota testing improved solar roof for EVs that can charg... by marvin on Friday July 05, 2019 @05:56PM (#20366202)
It will on an older Leaf with a smaller battery. In Norway, you might be forced to turn of the heating in winter if traffic gets bad. But with double-digit kWh of battery capacity as a normally-unuser buffer, it won’t be much of a worry, if at all.
Re:Toyota testing improved solar roof for EVs that can charg... by steelframe on Friday July 05, 2019 @08:47PM (#20367008)
> Tesla's dog mode does this.

Dog mode is the main thing keeping me from trading in my Tesla for something else.

Re:Toyota testing improved solar roof for EVs that can charg... by m463 on Monday July 08, 2019 @07:46PM (#20387802)
Tesla also has the milder "Cabin Overheat Protection" that can be turned on in settigns to keep the car interior from going over about 100 degrees fahrenheit.
Re:Toyota testing improved solar roof for EVs that can charg... by cortesoft on Friday July 05, 2019 @05:07PM (#20365910)
You can also just turn on the AC from your phone 10 minutes before you leave. Or, have it learn your schedule so it prepares your car for you before you go.
Re:Toyota testing improved solar roof for EVs that can charg... by gbrown on Friday July 05, 2019 @07:08PM (#20366621)
In hot climates, even when the air temperature returns to tolerable levels, radiant heat from the various surfaces is no joke.
Re:Toyota testing improved solar roof for EVs that can charg... by adrianN on Saturday July 06, 2019 @03:24AM (#20368454)
It helps that a Tesla battery can basically power a house for several days.