A car that runs on compressed air!
How long before the oil and auto industry tells us how dangerous compressed air is to the environment? You know that will be coming, or them saying that it costs too much in fuel to power a compressor to fill the car (which I incidentally have a compressor like they are using and have had it on an entire day while using a nail gun and my electric bill didn’t go up).
Bob Cesca and Cliff Schecter have more on this.