Sadly the media has give a dispropornate amount of attention to drafting semis - infamously half of the video in this story > Danger, Danger - Will Robinson!!! Hypermiling!!! Whatever the motives, they are making a flea the size of King Kong - sensationalizing a road hazard way out of proportion. This sticky is to educate our membership CleanMPG does not endorse drafting. The circumstances you could do this are rare - you would have to be on a freeway out of traffic with the trucker traveling at a constant and moderate speed. It's likely the trucker will shake anyone tailgating off as drafting has been mentioned frequently in their circles....many of them join to rant about this and we tell them we are not promoting this! This term is now in the glossary so nobody will have any illusions of where we stand on this. Other things to be elaborated in more detail is CleanMPG promotes friendly driving letting others know your intentions whenever possible letting drivers from behind pass in any way possible obstructing others a little as possible by staying in the right lane, reverse passing, avoiding rush hour, etc.