Hah! Nobody sane is doing that at every stop. For one thing, it shreds your tires. But for the ones who are doing it repeatedly (at the track), the answer is:

Hah! Nobody sane is doing that at every stop. For one thing, it shreds your tires. But for the ones who are doing it repeatedly (at the track), the answer is: very effective battery cooling! Tesla's software in their performance models actually offers a special "track mode" which, amongst other things, applies max cooling.