Yeah, like a digital “ideal line” that the cars can follow.

Maybe even a physical guiding line.

We could even connect all the cars via WLAN (WiFi) to exchange info when they are braking and accelerating. That would increase efficiency.

Maybe we could even connect them physically to have a stronger engine pulling more cars more efficiently.

If we already have an ideal guiding line, we might actually save some asphalt and make the roads more optimised. Use different materials so the tyre particles don’t pollute as much.

Ah, let’s just build a train.