Time Trial levels

There should be Timed Trial levels where you would complete a circuit in a given time, maybe have some Gold, Silver and Bronze trophies for achieving certain times. Sort of like Gran Turismo License tasks, but obviously more challenging as you build your own vehicle. Adding bumpy terrains or moving obstacles might be fun to spice up the challenge.

I'm not sure as to how much work it is to implement the idea in code, but I think this might be a neat feature.