Wheels On Crack was From The Depths wheel mod, which allowed vehicles to function in correct manner.
Additionally, it brought to the game new set of wheels and fun.
It was major mod and experience for me, in terms of writing mods, using Unity and C#.
However, modding FTD was very time consuming, so I couldn't do it for ever.
Around that time, I also wrote other mods for FTD. Modular wind turbines for example.
Another one, but less of impact were lights set.
I made first tree mod in FTD.
And some other smaller mods, of less importance.