Spin9k

A Formula 1 engine revs to 18,000 rpm, has four pneumatic valves per cylinder, and generates 700-780 hp from only 2.4 liters displacement. The cost is about $1 million per engine. But with all that, you get an engine that plays music.

Listen to the video to hear "God Save the Queen," played on a Renault F1 engine. Driven by a computer, the revved up engine plays other songs as well.

http://www.metacafe.com/watch/240975/f1_engine_song/