Stock with air conditioning as the only OEM option.
Mileage with air conditioning at 70 mph is about 42 mpg. OEM tires at 45 psi (max sidewall, lrr contis).
Receiver hitch. iPod/iPhone,CD/AM/FM radio installed with 120v inverter.
Current Mods:
I use a handheld anemometer to determine the optimum mpg speed. I do not use a tach or Scangauge. I have mounted a flowerpot bird with springloaded wings on the front cowling to indicate turbulence, wind speed, wind direction and drafting sweet spot. Drive barefoot for throtle control.
Planned Mods:
Air dam, supercap electric engine assist, turbocharger, full body skirt, solar roof, renewable hydrogen injection