I'm not an old-bike guy, nor a BMW guy, but theres a place called Scooter Source near me, and he had one of these in the shop.  I think he later had it on consignment for the owner (trying to sell it).  It has/ had a sidecar.  Absolutely beautifully restored.  I'm not a good collector, worrying about scratches, mileage on the clock, etc. Edit:  Whoops.  Not as old.   $3500??  Hmmmm.  Maybe I can become a collector... Nothing about a sidecar, though.  Probably for the best.  I'd forget about it, and ride with the passenger across the yellow line.    Whats that old joke?  "When I die, I want to go peacefully in my sleep, like my grandfather did.  Not screaming like the rest of the people in his car"? http://scootersourceinc.com/?paged=2