Because my butt is been plastered in this seat for 17 hours now as I make my move from California to Virginia. I think I'm going to call it quits in Oklahoma tonight not bad for one day. Got a personal best of 32.48 MPG's between New Mexico and Texas what's about 350 pounds of luggage in the back seat and trunk. At least it's a comfortable car my back isnt shot yet :-) and being that it's 32° outside these seat warmers are excellent. Man I love this car!