For those curious about fuel mileage.....

Best highway mileage I've recorded was 20mpg.
Typical mixed mileage is 17mpg.
Towing my (former) 28' enclosed trailer, loaded (racecar, tools, spares, etc....total gross weight was 17,320lbs) from Ventura to Buttonwillow (over the Grapevine) was 11mpg.
Towing that same weight to Cal Speedway (almost no hills) was 13.5mpg.