I have my solar panels and EV so I will be right for a while and it will help conserve some petrol for my V8s. PonyRider, the steamers such as the Stanley Steamer were apparently very silent and fast. Remember the Tata compressed air cars? They never did eventuate and I wonder how safe a highly compressed and extremely high pressure cylinder of air would be. It looks like EVs are currently the only viable impending alternative to fossil fuelled cars.