For those for whom the suspence has been simply unbearable: Marine cargo shipping achieves cargo fuel efficiency rates of as much as 1,000 ton-miles/gallon.
For passenger cars, the low mileage expressed in ton miles is largely due to the very low cargo utilisation. I'm using a single passenger of 150# here. You can increase net efficiency somewhat, but even, say, four 250# passengers and some luggage makes for only a modest improvement, as the starting point is single-digit tmpg.
For passenger cars, the low mileage expressed in ton miles is largely due to the very low cargo utilisation. I'm using a single passenger of 150# here. You can increase net efficiency somewhat, but even, say, four 250# passengers and some luggage makes for only a modest improvement, as the starting point is single-digit tmpg.