Coming to an Airline near you soon!
Buyer Beware: Cheap tickets may have consequences attached in the future.
Soon, very soon, some planes may not fly solely on petroleum. Methane filters in seat cushions to collect bio gas from flyers eating roasted beans instead of peanuts and two cows on every flight will partially power the airplane's jet engines to reduce the airline's increasing operating costs. Renewable energy is where it is at. Methane may stink, but there is plenty to go around. Now eat those beans!