I don't see it as friction. I see opportunity.
If we can make a mod for a 10 MPG motorhome that gets it to 11, and get it onto a significant portion of the fleet, Cha-ching!
People look at the 10 to 11 as big whoop-de-doo. I see it as a gold mine.
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2007 Dodge Ram 3500 SRW 4x4 with 6MT
2003 TDI Beetle
2002 TDI Beetle
currently parked - 1996 Dodge 2500 Cummins Turbodiesel
Custom cab, auto, 3.55 gears