Not only is the galvani racing car based on inventions that are over 2 centuries old it is also based on the latest in engine technology you can assemble this speedy racing car which is propelled by just a few drops of salt water with the help of the instructions and in the appendix you can read about the inventions on which the drive is based the battery for this vehicle which is salt water based contains three components a carbon plate a cloth diaphragm and a magnesium plate these