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.
Just fill them with fast water and it should make it over the hills.