While on airbags I'll mention if you have side or window bags you should not rest your arm on the door's armrest.
I believe this is stated in your manual but nobody reads them.

If you are sideswipped the airbag may save your life but break your arm if it is in the way.

Need fewer troops to support.
Drive a hybrid.
Best tank 71.65 MPG.

Before this car I spent two years learning hypermiling on my 2004 HCH1.