Why are we’all in such a rush, anyway? If you need to talk to someone right away, we got video conferencing. If you, in an emergency, really need to move somewhere fast, there’s helicopters. I say we just consign the whole ‘car’ idea to the dustbin of history, and just convert everything over to canals. If some insist on speed, we can consider adding a train system. But the only means of private mechanized transport must be by watercraft! That should be enough.
Not the craziest idea, but rich assholes will buy speedboats and ruin it like they do everything else.