So far, I have launched the golf ball into the back of the car, and once, out of the window. Today, I was driving with the windows closed, there was a *thunk* noise, and the golf ball went AWOL. It has not yet been rediscovered, I will have to wait for the sun or find a torch.
I'm slightly amused by all of this, since I can drift the car without significantly moving the ball (I don't know, I just can), and I can make the ball leave the dish at 10mph. I remain slightly unconvinced, but I still think it's a useful tool. If I can find it, that is.