Yeah, the math doesn’t add up. My old Honda (currently a paperweight in the driveway) could go about 110 miles on a single tank of gas, which was (if I recall) 2.2 gallons. That’s great mileage, but before that I had a BMW R/90 and it didn’t get that great mileage, but the tank was HUGE. So I would just cruise and cruise on that bike but on the Honda I would have to keep an eye on the odometer to make sure I stopped at a gas station in time.
I thought having to stop every 100 miles or so to get gas was, you know, sort of a drag, but having to stop for 8 hours every 100 miles - um, no.