Car A/C is generally run directly by engine rather than via electricity, unless your car is strong hybrid/EV. Anyway it's worse for efficiency. Hybrid cars wit

Car A/C is generally run directly by engine rather than via electricity, unless your car is strong hybrid/EV. Anyway it's worse for efficiency. Hybrid cars with electric A/C are better than that because it has true generator rather than alternator, and its engine run occasionally while not moving. Another tip for cooling car is to avoid sunlight as possible. Glass surface on car is so big.