What a great idea! I like the fact that the tent is on top of the trailer instead of being on the roof of the car.
Making an Off Road Trailer.
I haven't drained the battery yet but based on a battery life calculator, It should last at least 2 hours.
Tin Box Phone-Controlled RC Car
Tin Box RC CarView Instructable »
Is it ok to paint or brush this mixture to existing wheels? Will it still be grippy?