Launch HN: Prometheus (YC W19) – Remove CO2 from Air and Turn It into Gasoline

Re:Launch HN: Prometheus (YC W19) – Remove CO2 from Air and ... by mr__y on Tuesday May 07, 2019 @04:19AM (#19847488)

Sure, but one can argue that a EV could be designed/optimized for faster battery replacement. While it would still need at least a forklift to move the batteries, I believe the time needed for battery swapping could be greatly reduced with a proper design.

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Re:Launch HN: Prometheus (YC W19) – Remove CO2 from Air and ... by rhinoceraptor on Tuesday May 07, 2019 @09:49AM (#19849256)

I’d much rather have an EV optimized for efficiency, battery endurance, etc. given that battery swaps would only really be useful for long distance road trips.

But you’d still need to have expensive batteries in stock on location, technicians and equipment. I can’t see that ever being done at scale.

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Re:Launch HN: Prometheus (YC W19) – Remove CO2 from Air and ... by bluGill on Tuesday May 07, 2019 @09:22AM (#19849070)

Tesla did that for a while. They abandoned the plan. Batteries are big and heavy. It turns out to be far more important that engineers have the ability to fit them around the other parts (suspension...) than the ability to swap a standard battery.

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Re:Launch HN: Prometheus (YC W19) – Remove CO2 from Air and ... by rhinoceraptor on Tuesday May 07, 2019 @09:53AM (#19849289)

Yep, the batteries are ridiculously heavy and they’re used as structural elements in the car.

So swapping batteries is hard to do, and unnecessary for most drives. Sure, you’d want to be able to swap batteries in five minutes like pumping gas. But who’s going to ship batteries out to the middle of Kansas, build infrastructure, and pay technicians just for people on a road trip who want to swap batteries?

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