Driving idea for end game
Just having a spit ball of some possible end game driving content.
As you might have read to make a driving simulator would be quite hard.
So rather then going all out Forza 5 style or Grand Turismo style driving which would be very expensive and time consuming Im thinking something a little more basic

This is a fairly basic 2D style of in car racing which would be fun without being overly hard to add into the game
or

Possibly this kind of side scroller 2D drag racing for your builds. Drag against other cars you have made or cars friends have made or simply just default AI cars?
and lastly

I know this is a bike in the picture but if could be a nice 2D image of your car in this kind of style of racing.
The thing i like about all 3 of theses options are they are basic and fairly simple without too much put into high level graphics and physics.
But would still provide a level of immersion into the game by allowing one to make their custom type car and then have some level of ability to operate the car and face it off against another car.
Drag racing or road racing in both manual control (by player) or even a automatic version (computer controlled) to allow you to face off your custom build cars and engines against another of your own or your friends builds.
Whats everyone else think of this idea? Pros - Cons etc. Would love to hear what the game Devs think of this as a possibility eventually.