Check out this interesting story in Mother Jones (which I found via the Readymade blog.)
Wayne Gerdes is the Most Fuel-Efficient Driver in the World. He gets 59 MPG in a (non-hybrid) Honda Accord.
How? Along with other techniques, he tailgates semis; takes 25 mph turns at 50 mph; never uses air conditioning; and starts his car by pushing it down his sloping driveway.
Fuel economy is not just that. It's an obsession. So it's not necessarily a story about environmental awareness, but we can easily glean eco-minded driving logic from it.