PHOENIX — Have you ever sat in your car on a hot, sunny day and thought about how people survived before the invention of air conditioning?

Tyrann Mathieu, star defensive back on the Arizona Cardinals, did in a public service announcement for PETA illustrating the consequences of leaving a dog inside a car in hot weather.

The moment Mathieu enters the vehicle he starts sweating profusely and remarking about how a dog could ever survive this heat. The parked car ends up reaching 120 degrees.

Find out how long Mathieu was able to tough out the makeshift car sauna in the video above and think twice about leaving your dog in your vehicle when running errands.