We did a lot of them in the 70's. Car clubs back then either did a car show or a rally. Lots of fun. I still remember sending the girlfriend out of the car to go count the pickets in an 1/8 mile picket fence. 1, 2, 3, 500, LOLDo these even exist anymore? I have been wanting to do one for quite some time, each clue along the way will lead you to the finish line. Personally I think this sounds like allot of fun.