8 in 10 drivers also ranks themselves above average in driving skill too. I can bet you anything that the poll works like this.

Polltaker: "Do you think that SUV owners should switch to more fuel efficient vehicles?"

Joe Anybody: "Oh, absolutely, my neighbor has one and doesn't need it, and most of my co-workers have no need for one."

Polltaker: "So, you own an SUV yourself, don't you?"

Joe Anybody: "Yeah, but I need mine, it's those other people that need to change their ways, not me."