What do you think about ethanol from corn (for vehicle fuel)- good or a waste of taxpayer money?

Ethanol produces 66% of the power provided by gasoline in an internal combustion engine. Typically the attempt to provide equal power requires special and expensive engine modification such as used by racing teams. That makes the engines much more expensive. The most common mix of ethanol and gasoline is called E-85, which is 85% ethanol and 15% gasoline. That is the richest blend that can be used. Premium gasoline contains 10% ethanol which is used as a catalyst to slow down the burn rate of gasoline and make it more efficient in Internal combustion engines. Ethanol replaced lead in this role. The more catalyst that is added the slower the burn rate. High test gasoline burns slower than regular. This makes the fuel mixture burn longer to take advantage of a longer piston stroke. Regular gasoline has a shorter burn time than premium in the same engine. Ethanol being the catalyst which regulates burn time burns much slower in comparison.