Saudi scholar, Sheikh Mohamed al-Najimi has expressed his opinion that under Islamic law the use of ethanol could be considered a sin, as it is a form of alcohol: This opinion is based on a statement by "the prophet that prohibited all kinds of dealings with alcohol including buying, selling, carrying, serving, drinking, and manufacturing."
If you go by that rule, then you might need a driver to drive you somewhere as long as you didn't have to pay. Jurisprudence eh? What do the people of Masdar have to say about this?
Driving or Riding in an Ethanol-Powered Vehicle Could Be Sin: Islamic Scholar Opines
Islamic Scholar Suggests Using Ethanol-Powered Vehicles May Be a Sin