In my haste to get off the Vo-soap-box, I mis-stated: "Forget the fuel cell but focus on hydrogen when used in "shock wave" situation where its *times-ten* advantage in higher atomic and molecular mobility is cubed to become *times-100* so to speak... The standard tried-and-true ICE is the key to this greatly enhanced *fuel conversion process* using hydrogen.
Obviously going from acceleration to "jerk" is a squaring, not cubing. But... since you mentioned it, vern... speaking of cubed - there is the cubic power law of higher RPM, mentioned a few days ago which also comes into play when a jerk-increase in the compression chamber results in higher RPM for the same amount of fuel. Then the power available is cubed. If the 'jerk' of the shock-wave in the ICE combustion chamber, following hydrogen detonation, pushes against the piston with enough increase in net force applied, so that the engine spins 20 percent faster than if "only" acceleration were involved... then the net increase in power output is 1.2 ^3 or 73% OK back to the green-beamer of the original posting (don't ya thing BMW should comp. me one for all the free PR work ?) anyway, all of this taken together: higher Carnot eff, acceleration > jerk, more complete burn, higher steam compressive strength, higher RPM and the overlapping slight but exponential increases due to power law - all of that pretty much explains the anomaly, doesn't it?

