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 the toy model based on it.