Originally Posted by
no motor?
That's my guess, much like the cups of coffee that are left on the roof before people drive off. Someone else must have found it and returned it to the rack.
When the extremely strong Neodymium magnets came out in the early 90s I got a set. Experimenting, I found they were strong enough to hold a thin styrofoam cup to the roof of my minivan, even at freeway speeds. It made commutes interesting for a few days, but I soon realized other drivers' reactions made it a foolhardy stunt. I'm waiting on some Youtube prankster to revive the stunt.