I usually give the "thumbs up". Although often it goes unnoticed. Now that warmer weather is here, though, I can extend my hand out of the car so it is seen a little easier.

Eric Powers

MHG Organizer - www.MadisonHybridGroup.com
Hybridfest 2008 - A Hybrid Electric Car Show and More! www.hybridfest.com
Madison, WI July 19 & 20, 2008