By that figure, if you slapped four of those on top of a 2013 nissan leaf, it'd generate enough power in one hour for a leaf to travel all of 8km at 100kmph#. So, say 6 hours of that good stuff, you've earned an extra half hour of travelling. That's with 100% efficient panels working under theoretically maximum sunlight (midday on the equator). I agree, it seems that the author is speculating well beyond his area of expertise (whatever that is).

#http://insideevs.com/real-world-test-2013-nissan-leaf-range-...