It is not obvious that those problems are solvable, nor is it obvious that they're solvable in a way that doesn't simply recreate existing systems. And even if they are solvable, there's no lower bound on when that will occur.

And cars from the early 1900s may very well have been unsuitable to to the purposes for which they were employed in the early 1900s. You can't ask people to build their businesses and trust on a foundation that will "maybe" be poured "sometime" in the future.

You cherry-pick cars in the 1900s while failing to ignore all of the early 1900s technology that didn't succeed because there was no way to improve it. None of that was obvious then, either.