This may be the car of the future. No emissions, no pollution, no fossil fuel, gets 200 miles on a tank full.

http://www.upworthy.com/must-watch-the-p...kiss-its?c=ufb1

Well, I don't think I will get all excited about a car that runs on compressed air. As I see it being able to make a decent trip would take either an enormous tank or humongously high pressure. And then there is the question of how much energy it takes to compress the air.

Bill Gill

I read about this some years back.

Near as I reckon, it's a rather "simple" conversion from gasoline to compressed air. The negative side effect of which was a prohibitively loud engine.
Sounds like that would be a simple enough fix.
The project cars I was reading about, used pressures in the range of 400-500psi, which poses a small hurdle as well.

The real concern in the write up I had read, was what happened during a collision. The pressure was obviously only held back by the weakest point in the pressure system. When gas lines pop, you engine putters out, and nowadays a fuel regulator shuts off the pump and flashes a light in your dash. With compressed air, there would have to be many redundant systems in place to shut off the air, or reduce the pressure in a safe manner.

I could imagine having a hose pop off at 400psi, swinging wildly around, launching dust and gravel at ridiculous velocities.

Sure would be fun to build one of these though. All of the negatives seem paltry compared to the negatives of a combustion engine in the early stages of development.