This a slight remix I made of a Dual Mode Windup Car by gzumwalt http://www.thingiverse.com/thing:2262946 I loved the design but after printing the first one and showing it to friends and family I noticed they didn't know which end was the front. I thought maybe if it had some head lights it would make it more clear I ended up also added a dual exhaust to it also. I did all these changes with Tinkercad, it was a learning experience but I'm happy with the results but I do need to spend time with Fusion 360. I printed everything at .02mm in PLA with 80% infill with 4 perimeters on Top, Bottom and Sides.