stats vary. seems ~250 is common (2x 125 gals) and long haul ranges up to 2,000 miles.

Though another way to think of filling up is miles per minute. At 10Gal/Min and 7MPG that's pumping 70 miles a minute into the tank.

an 80% charge in 30 minutes on a 500 mile range battery is ~13 Miles a minute so roughly 5x slower