Your 10 miles of range a day is too optimistic.
Even here in sunny southern California, very few cars will have 10 hours of "good" sunshine i.e., maximum potential with no or very little shading. Also, apartments are usually multi-story units which are densely packed, producing shadows galore, or worse parking in a structure...
Also, you will now have to have some sort of inverter on to pump up your solar to the traction pack voltage. Even if your pumping out 200w, there's some being taken off the top to run it. And here's the kicker: you want put that DC/DC converter you already have on board up to the task? Heh, bye bye efficiency; switching mode power supplies are not efficient at low power levels relative to their maximum, and that thing needs to be rated to pump out lots of amperage in the other direction. And it's difficult (expensive) to make low power high efficiency switchers that are doing a 1:33 step up!
adric22 wrote:My wife's 2010 Prius has a solar panel covering half of the roof and most people don't even realize it is there because it is blended so seamlessly with the roof. It generates 60 watts and is just for running the cooling fan.
The current conciseness is that solar is best invested on the roof of your house,
not your car. I will say that if you *have* to have it on the car, stick to climate control and keeping parasitic low voltage things happy, and you'll see your money better well spent.
For extra credit, use thermal solar to help warm up the packs in winter time.