Energy Density in Volume (MJ/L)

Hydrogen Gas = 0.01005
Methane = 0.0378
CNG = 9
LPG Propane = 25.3
Gasoline = 34.2
Diesel Fuel = 37.3
Jet A Fuel = 33.0
E10 Gas = 33.18
E85 Gas = 25.53
Biodiesel = 33
Ethanol = 24

ANFO (you make bombs with it) = Lots
Antimatter = 9.266 x10^104


I suspect that E15 and E85 contain other additives to increase the energy content per liter.

There's nothing against burning ethanol (or wood, or any other material), you just have to optimize the engine for that particular fuel.

In the case of E15 - E85, older cars just aren't optimized for those characteristics.


I'd prefer Antimatter, but maybe that's in next year's model cars...