A New Solar Car

This adds a solar racer style car, mostly meant to be merged after/if  #5944 makes it in. Hopefully it will work as a solar counterpart of the bubble car, an easy to keep running car that is pretty slow and very frail  .

Its design is loosely based on the old Toyota Rara X, unluckily, there seem to be no photos of the original car online, only of the toy model based on it.