Why screw around with ethanol?

We can use genetic hybridization to create a stem-cell propagated variant of a whale heart which will live in a solution inside the engine compartment of my car, providing a sugar-fueled hydraulic engine that is both emissions free and which, when worn out, can be recycled into pet food or used to make fajitas.

The only "downside" is that sugar will become so expensive that soft-drinks and candy are no longer affordable, thus arresting the childhood obesity/diabetes epidemic, improving life spans while simultaneously lowering health care costs. Medicaid dental plans alone save so much money that they are reinstated in all states who've previously cut them. Prescription rates for psychiatric meds for both children and adults will plummet, as researchers finally determine they've actually been providing symptomatic treatment for chronic hypoglycemia all this time. As the technology is tasked to other uses, emissions continue to fall to such low levels that global warming is arrested. Lung disease not attributable to smoking is nearly eradicated.

See? Everybody wins. So get on it, people! I'll be waiting for my royalty checks.