A month later doublepost seems okay

After being on holiday for two weeks I've been coding again and finished an improved version of HillClimbRacing.
It features:
- dynamic car-loading from tables: this might be interesting for loading addons
- fuel (needs some improvement): You can only race as long as you have enough fuel
- a new and better car
- better vehicle physics (springs are working now)
Problems:
- post-step callbacks crash the emulator, but works fine on real hardware. Quick workaround provided
- the game runs really slow on the calc and I'm not sure what to do

Plans for next versions (unsorted):
- dynamically loadable maps
- control of vehicles in flight
- coins
- better fuel
- menu and GUI
- highscores
- upgrades
- driver who can break his neck