Flexible Solar panel sunshades, listed below, can be placed on the inside on all 4 sides with velcro tapes, magnets or hooks:
http://dx.com/p/car-sunshade-board-solar-powered-panel-auto-car-battery-...
http://sell.lulusoso.com/selling-leads/95179/Flexible-solar-panel-250W.html
http://sell.lulusoso.com/selling-leads/2989665/plastic-flexible-solar-pa...
Flexible Solar panel sunshades, listed below, can be placed on the inside on all 4 sides with velcro tapes, magnets or hooks:
http://dx.com/p/car-sunshade-board-solar-powered-panel-auto-car-battery-...
http://sell.lulusoso.com/selling-leads/95179/Flexible-solar-panel-250W.html
http://sell.lulusoso.com/selling-leads/2989665/plastic-flexible-solar-pa...