I've always payed attn. to fuel economy, driving a semi it is hammered into you from day one. I really go easy on acceleration and coast to stop as much as practical, and I never exceed 65 usually it's about 58 mph. But best thing I can come up with is to reduce miles, no joy rides, combine trips, pick up things at store for neighbors and they do likewise. When fuel cost is considered, buying in my small town, is usually cheaper. Going out for supper is now in town instead of the old habit of 60 mile round trip for a night out. I think just maybe this might save some downtowns in smaller communities, as long as employment base doesn't leave.