if you chrash a rental-car on the racetrack you will be in really bad trouble. even if you (or for example i) crash a private, insured car on the racetrack, the insurance company try's not to pay. they just say you did it "vorsätzlich", what means you knewed the risk before you brought the car on the track. and german law says they`re right, because in the insurance contract is no "special risk" included. but before you get bored in freiburg come to hockenheimring on friday. there are the so called "touristenfahrten" from 11am to 5pm with a break from 12 to 1. http://www.hockenheimring.net/news/touristenfahrten-im-august i`ll be there. and if you're interested i can bring some parts you're looking for. there sure some e30. mine is black with silver hood. see you in hockenheim! p.s. you have to go into the center of the ring - ask for "fahrerlager"....