Although consider that you don't drive a car continuously.

I'm in Florida, we average 4 "peak output" hours of sunlight a day.
Lets say I have 3 square meters on top of my car, and go with the 390w/sqm
That's around 4.7kwh solar input per day...  or about 6 HP/hours per day.

I ran the Torque app on my car, and cruising on the interstate I only
draw about 2-3 HP to cover wind resistance.
I very briefly pull more as I accel to 70.
Start/Stop rush hour traffic, I pull 30hp or so for a few seconds, then coast.
Around town, it's a similar thing.

I suspect that the average driver could get along on this.

On Wed, Oct 7, 2015 at 8:40 AM, Knapp <xxxxxx@gmail.com> wrote:
> So we are looking at 650 watts per square meter * .6 which is 390 watts as
> the current max and future max might be something like 600 watts per square
> meter which still leaves a car or boat very underpowered.
>
> "The car motors are rated to a peak power of x watts. They don't need to run
> at peak output otherwise you couldn't get the rated range figures."
>
> Is this because of air and road friction or does the motor loose efficiency
> at peak output.
>
> --
> Douglas E Knapp, MSAOM, LAc.
>
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