[unixrocks]

Yeah....but thats a liability in most cars (the high octane)

IF you have a high performance race car that you need to have precise control over the ignition of the fuel then ethanol is perfect since it requires such a high temperature to ignite it it is not going to burn prematurely.

If you dont - then your likely going to have some unburnt fuel coming out your car in small amounts (like very small amounts)

given the energy density of ethanol being half that of gasoline (see why theres no E85 stations around?) I dont see much to like about ethanol other than as a fuel additive and a niche market as a racing fuel - maybe aircraft could use it - or rockets I dont know about those types of engines.

Edit: that was dumb - rockets and aircraft need the highest possible energy density - last thing they need is lot of weight.....just dawned on me.