Hi there. I've got a bit of a doozy for a new feature: Transport trucks and automobiles.
Point 1: I envision it highly resembling Gshn28's old CTG datapack. Where blocks would go under the roads and "direct" traffic, with 2 modes for the vehicles: "Roaming Mode", which would just randomly go around your cities, useful for map makers. And "Routed Mode", which would be useful for trucking and transporting things. The vehicles would take the best route from point A, to point B.
Why? Because trains and boats exist, so pack authors and map makers would probably put this to use. Also it'd be the "starting industry" for some packs, others it might be late game?

Point 2: I noticed in another topic on here you need someone to model for you? I've got a little bit of Blockbench knowledge, but I'm willing to learn more of it? Feel free to let me know if you'd like me to attempt a model or two?

Closing Remarks: Thanks for reading this, and I wish you the absolute best! This is a great mod!