OK, no ATVs. How about the other side of the spectrum, tanks?
A place where you can drive Panzer (German for tank)Panzer has been in the news a couple of times. It is close to Berlin. I believe it must be Panzerkutscher. They have a big terrain, some old cars (to crush), and various tanks at the disposal of any paying customer above the age of 16 years. You can drive, take repair courses, etc.