During the hot summer days, we take steps to protect ourselves from the heat and the negative effects of exposure to the sun. In the same manner, the hot summer weather can take a toll on your car or truck, from the paint right down to the tires, unless you take steps to protect your vehicle.
Much like we protect our skin by applying sunscreen and avoiding too much direct sunlight, the body paint of a vehicle is what suffers the most, if subjected to extended UV exposure. So, park under cover or in shade, when possible, during the daytime heat of the summer months.