Did you know that car is in Gran Turismo Concept? It's called the Toyota Pod. You can actually drive with those cars in GT Concept. It shows it's emotions by changig the color of it's grill and wagging it's tail.
Also try this link or here.
" N2O, or Nitrous Oxide, also known as laughing gas, is a weak anaesthetic gas that has been in use since the late 18th century. Common use includes both surgical and recreational purposes. Most people have experienced nitrous in the context of dentistry. Nitrous is also used in the dairy industry as a mixing and foaming agent as it is non-flammable, bacteriostatic (stops bacteria from growing) and leaves no taste or odour. Nitrous is also used in auto racing to speed engines. Nitrous is even used in diving to prepare divers for nitrous-like effects. "