Carz

Carz is a mod that adds cars, roads and road signs.
The roads and road signs are custom paintable with a 16x16 icon, that you can create with the painter itself (Right click painter to open creation gui. Shift right click for choosing gui and that you can apply it to signs and roads).
The current stage of the project is 'PoC' or 'Proof of Concept'. That means that there is nearly no usable content for the players, but there is a working codebase, so content is easy implemented. This also means that it is impossible and nobody should try, to play this in survival mode or on a map that you want to use later on.
A useless Fuel station, the one currently implemented road sign,the one road block and the painter can be accessed via the creative tab. You can spawn a sportcar with '/summon carz:sportscar' and a bus with '/summon carz:bus', but be warned that you only can remove them via the '/kill' command. You can move them while sitting inside and using your default moving keys (default: WASD).

At the current state you aren't allowed to use it in modpacks or even redistribute it!