Compressed air supercharging

[Daox]

I was surfing around on Youtube the other day and came across these guys.

http://casupercharging.com/

They build compressed air supercharging systems. Basically, you fill a high pressure tank with air. You use a scuba compressor to fill them to around 3000 psi. That 3000 psi gets regulated down to something more manageable, say 10 psi so you don't blow your engine to smithereens. Then, the system blocks off your normal intake, and runs solely off the compressed air tank for a short period. The idea sounds pretty cool and does have some very nice advantages over other forms of power adders.

Have you guys ever heard of this?