
Snow car has horrible acceleration. Liberal use of boosters fixes that.
Since the topic question is asking what new environment we'd like to see...
I'd like to see a TM environment based on motorcycles. Some sort of hybrid between dirt bikes and crotch rockets. I'm not sure what blocks you would need. It could be set in the city, with plenty of racing around the city.. as well as just outside the city... maybe in some area with dirt jumps. I think there's a lot of potential with this sort of environment.