The summary at the top of this blog post sums it all up:

In 2009, Neil Young released Fork In The Road, an album which is dedicated to the Lincvolt project that transformed his classic Lincoln Continental into a hot zero emissions vehicle that gets 100 mpg. In this paean to the LincVolt project, Karen Barry also asks, if a 1959 vehicle can be green, what is stopping all current vehicles from achieving the same goal?

This is not the first time that Mr. Young has put himself out on the scene as an important environmental voice.  Back in the 1970′s on his classic album “On the Beach” he presented mankind as a vampire preying upon the earth in the song Vampire Blues.   A decade and a half later in his big hit “Rockin’ in the Free World” he sarcastically bragged about humanity having “Styrofoam boxes for the ozone layer . . . fuel to burn and roads to drive”.