And since they're travelling along predetermined routes without human intervention, we could even give them their own dedicated lane that's more direct. That would free up traffic for normal people and streamline deliveries for these trucks.
And while we're at it, if they're already going on dedicated roads, why not make those roads more efficient? Rubber on asphalt damage is expensive to repair. Steel wheels on steel tracks are even more efficient and better to maintain.
And since steel tracks can handle so much more wear, we could actually make the trucks super duper overpowered and have them tow like 100 boxes at a time instead of just one or two.
And since steel tracks are conductive, we could actually electrify those rails to power the super duper overpowered track truck so it doesn't have to stop to refill for gas. Now we're combatting climate change at the same time.
At scale, humans are a lot like cargo actually. We could have dedicated track trucks to move large amounts of people from core parts of cities to other core parts of the same or other cities. Then we could reduce car and plane usage too.
Track trucks is a bit of a dumb name though, so maybe we should call it something more relevant. There's an Old French word "trahiner" that means "to pull/draw" so maybe something like that? Trainer? Or maybe just train? I think train sounds cool.
Too bad nothing like this exists or will ever exist π