Have you tried telescoping the steering wheel and moving it up and down to try to find a position which makes your body allign better so the headrest doesn't cause a problem?

Also, as far as MPG goes. Expect about 5mpg or so bump in the spring when temperatures warm up.

Edit:

Have you tried putting something like those beeds or whatever that people use to let air get behind them and the seat? Or maybe a massage pad something like this http://www.brookstone.com/shop/produ...s=&prodtemp=t2

Maybe not that expensive, but I hope you get the idea of what I'm talking about.

My hydroponics experiment

You ever notice how hard it is to lip read cartoon characters?
"Crazy is what the sane call Delta Flyer"