60 MPG is a piece of cake (in decent weather) with this car in sub/urban driving, with lots of EOC (engine off coasting), and pulse & glide.
I'd move the kill switch up to position #3.
Also: where in the list is instrumentation? I'd put that near the top too.
FYI, I tested (not very well) grille blocking + rear wheel skirts on this body style:
Testing grille blocking & wheel skirts: +5.7% improvement - MetroMPG.com