Moving any specific component of that system to another niche might help a little, and I'd welcome any progress, but is not a solution.
With that said, I'm a year around bike commuter. Cargo bikes, trailers, and baekfiets are gaining popularity in my locale, especially the electrics.
Actually, it would be my 6th bike, but that's its own problem. ;-)
I'm spoiled by where I live now, a 25 minute easy bike ride to my workplace, a similar ride for my spouse, and within walking distance of shops. It's really a lifestyle changer.
I bicycled everywhere with a two year old in a kiddie seat until I was eight months pregnant. In Germany, which was almost as cold as Kansas at times.
It is if your car isn't a junker.
Remote start is cheap compared to the price of a car anyway, if it makes a difference.
Also the sun isn't significantly hotter in summer than in winter; it's not going to make you overheat.
> The Vaalserberg is a hill with a height of 322.4 metres (1,058 ft) above NAP and is the highest point in mainland Netherlands
before anyone gets the wrong idea, the biggest problem is not going up, but going down (especially with kids, cargo or kids+cargo)
Imagine that you live in Italy, where only 24% of the population lives in cities with a population equal or larger than 250 thousand people.
Half of Italy is not flat and it's very hard using the bicycles to move, unless you are already expert and even for bikers (as in motorbikes) it's challenging going up and down the hills and mountains and usually they go in group.
Paradoxically around Milan (and in the city) they use bikes a lot, but it's also one of the most polluted areas in Italy because they also use cars a lot to move from or to Milan and other large cities, mainly to go to work or it's trucks moving goods.
You can't replace them with bikes.
You can't replace them with trains either, because regional trains are already at full capacity and Milan public transport already moves 800 million people/year (fun fact: the Milan public transport company ATM also operates the Copenhagen's subway).
Being on flat lands surrounded by high mountains also means that there are no regular winds cleaning up the air, so paradoxically biking is more dangerous for your health.
23% of the Italian population (13 million people) lives in cities with a population between 20 thousand and 59,999 people, the majority of towns in Italy (20% - 1,509 of them) have a population between 1,000 and 1,999 people and host 2.5 million people.
Those are the areas where they can't give up on cars, they have no alternatives, they have to use it daily for every activity: from groceries to work, school, church, etc.
They are usually near highways or heavy traffic roads, because many people move daily to go to larger cities for work, but also the areas where biking it's more of a challenge.
So it's a combination of long distances (people live away from cities because housing it's much cheaper), geography and older population.
I present you a sample of the area where my parents come from.
https://www.juzaphoto.com/galleria.php?t=2681540&l=it
https://www.juzaphoto.com/galleria.php?t=2510258&l=it
https://www.juzaphoto.com/galleria.php?t=2510257&l=it
She used it to carry four kids (her three and one of mine) when we visited. We took the rented car and she beat us there.