Quote:
Originally Posted by $5 submissions
How about the car that runs on compressed air?
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I personally like compressed air cars more than electric cars. An air tank costs almost nothing compared to electric batteries (which must be occasionally replaced). And filling an air tank is normally much faster than charging a battery pack. Air compressors can be electrically powered and could easily be installed at many fuel stations.
The problem is that compressed air cars need enormous amounts of compressed air to get the same range as electric. And there is risk of ear damage if a tank ruptures. sound protection is needed.
As far as I know, rotary compressed air engines are the most efficient engine/motor in the world. And they are small/light/cheap too.