It's now on Bananas, absolutely not finished yet, but playable. Give it a try.

What do you get?
- road vehicles from 1860-2000(ish)
- passenger trams, buses and coaches
- general cargo trams and trucks refittable to all freight (so should work with all industry newgrfs)
- specialised cargo trams and trucks
- includes steam, electric and diesel vehicles
- most trucks are articulated and cannot use drive-in roadstops
- courier trucks intended for town use (or however you want to use them) and are never articulated (so can use drive-in roadstops)
Eh credits: DanMacK did a lot of the sprites, also thanks for sprites adapted from originals by: Pikka, Zephyris, and the BATS set (all sprites used with permission or under GPL v2).