[obstacle1]

> That's a problem with a limited imagination

Only if you examine the problem so superficially you can't think of any other cost of personal vehicles than burning gas.

Cars burning gasoline isn't the only or even the smallest problem with everyone needing to own a car. Think of the supply chain required to produce, deliver, and dispose of personal vehicles for everyone. Think of the civil infrastructure required to enable everyone to have a personal car. Think of the human cost that humans being terrible, irresponsible drivers takes on society. For starters.

> There are things called towns that exist in suburbia and can be reached easily by bike or walking.

There is a thing called weather in much of the US and world that makes this unrealistic. Further it's disingenuous to claim it's feasible to walk to a town to do your groceries from a suburb. You're going to need to walk at least 2-3 miles (best case) to a grocery store and you're not going to be able to carry more than a couple days' worth of stuff, less for a full family.

The suburban way of life is going to crash and burn, spectacularly. It is running on credit it can never pay back. At least 2 generations have covered their eyes and ears and yelled "naaa naaa we don't believe it". It's time to acknowledge that we can't carry on that "tradition'. Either we voluntarily adapt, or our surroundings will force the change.