Feature: Tardis Flying Physics. When The Tardis is being flown, hitting the bottom  part of the Tardis on something like a tree will cause the Tardis to flip over on its side while flying.

The Tardis will act as if the laws of motion exist in Minecraftia.

Addition: When and if the Tardis hits something, it will cause sparks to fly around (Particle 27) even if you scrape the Tardis across the ground.

I like it. 

Although, maybe it should only spark when striking against something like Metal. I don't thinks snow, ice, or dirt would have quite the same effect, lol

I agree