found this on bored panda, in a round-up of cool, wacky inventions from the past. Apparently the paper-roll map advanced based on the speed of the car. But wait, what happened when you turned onto a new street? you'd have to have quite the library of map-scrolls stashed in your car, and be doing a lot of scroll-swappin' at least the idea was pointing in the right direction. 18 cool inventions from the past read the full story » | more on make » | comments » | read more articles in gps | digg this!