Henry Ford's Model T was originally designed and built to be run on ethanol. Today, ethanol (190-proof alcohol) can be produced with domestic stills for about $0.75 per gallon. When blended with gasoline costing $3.00 per gallon, a 20% ethanol and 80% gasoline mixture costs $2.55 per gallon. Assume fuel consumption at 25 mpg and engine performance in general are not adversely affected with this 20-80 blend (called E80).