My wife suggests holding your breath while you drive (passengers as well) and there will be less weight to transport, therefore yeilding better mpg's.What do you think?
1. I would understand why she would have suggested that if you had a blue car. You would match the color of your car 2. Hope you don't have a long commute! 3. Was your insurance policy just updated?
Actually the weight of the air is in the car, weather it's in your lungs or not. I suggest sealing the vehicle and using a vacuum pump to extract all air from the cabin.
My wife will be thrilled to see that her suggestion was so well received! Thanks for your great ideas. (She likes to make fun of all the obsessions of us PC'ers, but she'd love to steal 'ol Whitey!)
Fill the tires with helium. Also fill the passenger compartment with as many helium ballons as will fit. Have all passengers breath the helium balloons during trip.