Richard Branson is currently testing biofuels for use on Virgin Airline Jets! The reason? Peak Oil.
"In about four or five years’ time there’s going to be more demand for fuel than there is fuel on this planet. So fuel prices will go through the roof, and so planes, ships, we’ve all got to come up with alternatives."
Other major acknowledgments (that I'm aware of) have come from automaker GM's CEO and their development of the Electric Volt and oil company Chevron with their website "Will you join us".