Air powered transportation has been around since the mid 70s.
Remember when we all stood in line to get gas in 1975? Well, there were a few places where the price of gas went through the roof. So, to combat this the air powered bus was developed and has been in service for many years.
This will be the bane of gas companies. There will no longer be any need for gasoline and...if you can generate the power to run the compressor for the air storage tanks from solar or wind, you are set with just maintenance.
