Hi Hope someone can answer a few quick q's: I am a high school science teacher and I want to use Racer in class to demonstrate / experiment on the effects of water / difference surfaces / tyres on the stopping distances of cars. 1) I assume that the car physics can be edits quite simply via .ini file ?? 2) Can I take an existing track and "easily" add some water / gravel etc to a straight or corner? Thanks in advance as I am keen to use this sim in class.