[olddog]

I understand that the fuel burns in a controlled fashion, and that when it light all at once that is detonation, which is the pinging we hear. The article twice stated that it is an explosion.

" The spark ignites the air-fuel mixture in the engine's cylinder -- producing a controlled explosion that forces the piston down to the bottom of the cylinder, generating the horsepower needed to move the vehicle."

I will believe it when they get a running engine that actually delivers real results.