Americans want big cars.

American regulations created a dichotomy where there's no middle ground. Big car or sour cream dollop with no space and no power.

Americans want big because big means "safety". An SUV feels safer next to the semi than a Smart car. They also want big to haul the occasional furniture between moves, go on the occasional road trip, bring all the gear when camping, or bring back a massive shopping haul.

American housing is way less dense outside the cities. There's no reason for a compact car if you live in the burbs apart from gas mileage.

At the same time, more and more people want to build bike lanes and people infra near roads. "Strong Towns" movement, etc.

We're putting more bicyclists on the roads next to big cars now.

That is not the only reason for a big car. You have to find special forward facing child seats to put 3 wide in a Tesla model 3 rear row, then do yoga to try to insert the children into them. To run the child seats facing backwards as long as possible, you need to be something like 5’4” or less to be comfortable with 2 seats in the back. That’s pretty standard in the “normal” sized car market, having a SUV or a minivan makes sense considering that.

I know. Sold my Tesla, now drive a Land Cruiser. A small car is just an exercise in pain when you have kids and need a car to get everywhere. If I had safe bike lanes to get the kids to school and practice and the grocery store, I’d just have an urban arrow… but I’m not contending with the aforementioned kindercrushers that aren’t looking for cyclists and risking my kids with the way our streets are designed. I would happily support changes that fix this, but this is the world we’re in as parents.