If those panels and especially the roof were photo voltaic, range anxiety would be reduced. I might even consider buying one then.
Solar panels on a vehicle are useless. There's simply not enough surface area available on a vehicle to fill more than a tiny fraction of the battery. And definitely nowhere near enough to drive.
https://solarpowerrocks.com/solar-basics/how-much-electricity-does-a-solar-panel-produce/
"A typical solar panel produces around 200 watts of power. "
The "typical" panel they are talking about is too big to fit on the SRK. A pretty efficient Sanyo panel that produces 205W is 35"x52". Or 3'x4.5', if that's easier to visualize. At 200W, that would take 5 hours to produce 1 kWh of power. The Nissan Leaf typically has a 24kWh battery. (Some have a 30 kWh?) At 12 hours of strong sunlight per day, that would take
10 days for one solar panel to charge the battery, even assuming that you could get a panel that size to fit the car. (You can't.) That's also a serious overestimation of the actual amount of daylight you would see, and the amount of energy you can get from that daylight. At my location, that panel will only provide 1.1 kWh per day. (According to the calculator at
http://www.wunderground.com/calculators/solar.html)
The Nissan Leaf gets ~90 miles per 24kWh. Or about 3.75 miles per kWh. At 5 hours per kWh, you're talking 1.3 hours to generate enough electricity to drive 1 mile. Assuming full efficiency of the solar panel, and bright sunlight for that whole hour.
Now, if you live in Death Valley, you might get better charging efficiency. So, I'll give you 1 hour per mile. (But if you're in Death Valley, you'd probably want the AC, which would greatly reduce your range, so you wouldn't get 1 hour per mile anyway.)
Oh, and that Sanyo solar cell would set you back almost $1,400. Getting it custom-fitted to conform to the roof of your car? I'm not even gonna go there.