For the last couple of days I have been thinking about car pipe organs again. This is an idea from some years back. The basics are fairly simple, you have a number of cars driving along a freeway side by side. On the top of the cars are long metal tubes of various lengths and diameters and as the car hits the right speed the velocity of the air travelling through the pipe will resonate and a note will sound. So the theory is that if the cars drive along speeding up and slowing down they will be able to play a tune. Now there are a number of things that need to be worked out I agree, but in principle it should work.
The reason that this is back in the front of my consciousness as opposed to hiding down the back with all the other scary thoughts is that I saw a show on the Crucible ( a blacksmiths shop in San Francisco not the play) and they were playing with flame throwers mounted on the top of their trucks and it got me to thinking (hey you down the back there… yes you the car pipe organ thought. Come up the front here for a minute) that maybe by squirting flame down the pipes you would lower the density of the air in the pipe and get a bit better control over the pitch.
Anyway thats as far as the thought has got at the moment (OK thought, back into storage.). I need to find a pyromaniac and see what they think. Dont you just love it when art , physics and madness all intersect?