They have no official "roadmap" that I could find, but they do have plans to make it more game-like at some point.
There are hints of some sort of multi-player, and it already has two (very simple) AI modes.
One that has AI chase you (destruction derby!), and another that has them flee from you, and then I created a third as a lua addon, that just has a car drive in a straight line (good for setting up crashes or jumps for videos etc)
Someone has created a spline path addon already as well.
I've heard they'd like to make it into some sort of game that allows you to modify the car (realistically) in game, and then race it. They likened it to some other game, but I forget which, and didn't know what it was at the time
Yeah, you'll have to do some digging, I'm not good at this game history stuff as you can see