29 Aug '12, 4pm

Prototype 2014 Volkswagen XL1 Ultra-Efficient Car Spied Testing

Prototype 2014 Volkswagen XL1 Ultra-Efficient Car Spied Testing

So, let us clear something up here. Is the 260MPG the figure taken with the "plug in" part included or purely on diesel? I seriously doubt that it is purely on diesel. They will be lucky to get anything close to "half" of that amount in the real world driving environment. A typical good EV is lucky to get about 5 mi/KWh (260mpg is about 7.6mi/KWh). If 1 gallon of gas is equal to 34 KWh in energy, then a good EV will be lucky to get 170 mpge. I seriously doubt that any ICE will do better than that since its efficiency is limited to the low 30s (%) while the Electric motors are in the high 90s (%). Of course, you can always build a "cage over bike". Solar sun race build more efficient cars, but it is NOT practical to drive them.

Full article: http://www.greencarreports.com/news/1078812_prototype-201...

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