On one of the hottest days of the summer, a few years back, a stray kitten got into one of the guy's truck, in the morning.
The cat spent the day locked up inside, with the windows rolled up. The truck was on concrete, in direct sunlight, until we rolled back in around 5 pm.
The guy found him on the floorboard, passed out, and brought him to me. He was totally limp, tongue hanging out, looking dead. I put it under a water faucet, and soaked him. The pu$$y sprang back to life, and appeared to be completely recovered. It even ate some lunch that was left over.
It was run over by one of the guys at work, a couple a weeks later. But up til then, it was fine!