[champignon]

Officer: Get out of the car and walk this straight line for me.

Officer: Breath into this machine I have here.

Officer: How did you end up running in to this tree in broad daylight?

Driver: Officer, I can explain it to you. You see, I bought this new differential from Serbia and had it installed in my car. I was out driving here, minding my own business, when all of a sudden the wheels locked up and I tried to regain control but ended up running into this tree, which was better than hitting those kids in the crosswalk.

Honestly, if you're going to put this sort of control part into your car, buy the real thing, even if it's made for an M3 or some other BMW.