>>>Not really, air isn't explosive (to differ from "explosive P" (*)). It would be a mess, of course, but I don't think this is in any way more dangerous than driving a tank full of gasoline vapors on a hot day, or a bottle of propane (that thousands of vehicles in Europe use regularly instead of gasoline) or a similar bottle of hydrogen - which are all combustible and explosive.
>>
>>I was thinking that to get propulsion from compressed air aot combustible gas it would need to be at a hell of a pressure to get any kind of range out of the vehicle. If you rupture a compressed air vessel then I'm sure you'd get the equiv. of an explosion.
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>>>(*) The "explosive P" came up this weekend, there was some guy on the radio, explaining the regional differences in pronunciation of consonants. The sentence "I leave a trace of devastated lavatories" came naturally.
>>
>>What is "explosive P" ?
>
>It is the reason why they always tell the people to move away from the microphone, or to hold the mike to the side, not exactly in front of their mouth. Sounds almost like an explosion when recorded.
>
>Um, it's the aspirated "p{boom}" sound.

Ah, I know that problem, from singing into a mic. You have to direct your P above it :-)