On: G.M. Puts Volt’s Mileage in City in Triple Digits

[ynniv]

Just as a Vespa would have poor gas mileage carrying heavy truck cargo - this has nothing to do with the energy source.

[sp332 → ynniv]

I thought that was the idea - removing different energy sources from the picture and looking at which vehicles are more efficient.

[ynniv → sp332]

There is no intuitive way to convey what you are proposing. If you tried to move 4 tons of cargo, a big rig would use less energy than a Civic. If you are trying to get yourself across town, a Civic will use less energy than a big rig. It would be complicated and expensive to calculate the full spectrum of efficiencies for a vehicle under different cargo loads. Personally, I would use the data, but I suspect the average person would find multiple efficiency graphs to be overwhelming.