Someone can probably do the math, but i have a hunch that humans are technically not very fuel efficient if you look at calories burned pr the total mass being moved along.
But whatever it is biking is awesome, but being technically correct is even better.
Nice graphic.
But it seems like it doesn’t factor in kg of mass moved. A human and a bike is a lot lighter than a car or a horse. You could also argue that the vehicle weigh should be ignored but then again you could easily argue back that weight of goods move can possibly be a lot higher with a car if you load it up to capacity. Ignore that. I did not see it said 5 riders for the car