After a few years of hypermiling, it begins to wear on you. It is especially difficult when you hit a wall that you can't seem to get past. While I am not there yet, I fear that this summer I will indeed hit that wall. Hopefully it will be north of 70MPG.
Anyway my point is this. There are several factors that influence FE. Technique is related to the driver while vehicle weight, aerodynamics and rolling resistance are related to the vehicle and route. Anything you can do to your vehicle/route to increase FE will still be in effect should you change your driving style/technique. That is why I am concentrating on aerodynamics, weight and rolling resistance, or Built-in FE. If anyone can drive my car and get 50 MPG, that is quite an accomplishment.
So my next area of concentration is rolling resistance. My current tires did great in the snow but are not optimal for summer driving. So I have done much research on LRR tires. Within the next few weeks I should have new HX wheels with LRR tires and hope to see some improvement from them, although tires need a few thousand miles on the to begin yielding the best results. The new tires are back to the stock diameter so my ride height will go down another inch which should also help with aerodynamics. Each wheel/tire will wheigh less than 25 lbs so that will be a 36 lb weight reduction of unsprung weight.
I hope this makes a significant difference. Prolly good to do a sidce by side comparison with the different wheel/tire setups.
krousdb 
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