I'm totally new to Trackmania 2 Canyon (But not to Trackmania) and it's scripting language, but I read that it doesn't let you change anything with the car.
Is this true? And if so, will this feature be updated in the future? I'd love to be able to do unusual things like giving the car the ability to jump, or forcing the wheels to go down if they are touching something, so that I could allow the car to drive up walls and ceilings as if it was magnetic

It seems like they've added so many new customizing features, so I feel it's too bad that this was left out. Maybe it could be abused in some way that I'm not aware of, but I'd figure it would be fine since it would be specific per-track.
Oh also, not to ask 2 questions in one, but I had thought you could change the time of day using the media tracker, so like you go into a tunnel during the day, and come out at night. I can't seem to find that option.