That time Mike Bloomberg installed an AC unit in his SUV

During a record-breaking heatwave in New York City in 2012, then-Mayor Mike Bloomberg held a news conference to warn of dangerously rising temperatures.

But when he was asked whether school children should stay home that week, since nearly two-thirds of the city’s classrooms were not air-conditioned, the billionaire bristled.

“Life is full of challenges, and we don't have everything we want. We can't afford everything we want. And I suspect if you talk to everyone in this room,...