There is no escape from the sun, so why avoiding it?
Juz my opinion,
When is your car next repainting session? In 1 year? 2 years? If you can afford it, try tell the foreman to spray a few more layer of paint and more layers too of those clear paint on your car... By doing this may prevent your car rusting easily and paint from loosing their colour by the scortching of the sun, you can even polish your car many times. This also help protect your car from flying debris like pebbles and also vandalism such as scratching because the protective clear layer is too thick to be scratched(tested). Optionally, you can also try put those 3M Clear-film Paint Protector, it applies directly on top of the paint by sticking a stronger-than-plastic film, similar to tinting. My car always park under the sun for consecutive 8 hours across noon time daily, my last repaint is about 5 years ago and it's still doing fine except for the spot I banged a tiang... >.<