The market is widely regarded as the best way to find exactly these solutions (right tool for the job).

Your thesis is that people are throwing away on the order of $30-$50k every 8 years or so, in order to do something inefficiently and unsafely.

If that were true, these golf cart vehicles would sell like mad. As it is, “subcompacts” have failed to sell in the US.

I posit that there is very significant utility in larger vehicles that your personal experience is simply failing to account for. Humbly consider that for millions of Americans they decide to spend their hard earned money on a large vehicle because in fact it provides massive utility to them and their family.

Besides, our transportation system is a modern marvel, and the safest way to achieve mobility per mile ever in human history. So to call it incredibly inefficient and unsafe is not merely hyperbolic it’s just untrue.

I suspect we can and will continue to make transportation safer per mile into the future. I see no evidence whatsoever that miniaturizing vehicles is the way to do that, certainly not without outlawing or somehow segregating the bigger ones, which is neither practical nor economically or socially viable.