Solar Speed Raceway
The first Single Panel Solar toy Racing of 2013
4 little cars, converted to solar and DC motor running, looking for a burn along the raceway.
Each car can be seen in more depth in recent videos.
The idea, is to perhaps encourage folks to build and race such cars, using just 1 solar panel of any size.
100 Watts could be the size, or one of these dinky ones. Any single panel.
International racing would be to compare run times, by showing YouTube videos of the cars themselves from around the world.