How do cats, especially black cats, not spontaneously combust laying in the hot sun like this?

View this post on Instagram How do cats, especially black cats, not spontaneously combust laying in the hot sun like this? 20 secs after pic, she is sound asleep… #BlackCats #Cats #RideLocalDreamGlobal A post shared by Ride Local Dream Global (@ridelocaldreamglobal) on Sep 14, 2018 at 10:35am PDT