Plus I would assume there's some way to use a phone or bang on the walls to signify a need to stop.
People are not generally as stupid or as desirous of dying from heat stroke as you assume.
The truly dimwitted are those who accept the constant tutelary despotism of the state because of an exaggerated fear of low probability events.
Some of the “despotic” rules are necessary, Bub. You know, like stopping for stop signs or not being sold bad meat, to name a few.
Apparently you‘ve never been in the back of a box truck in the summer- and, no, they don’t have phones in the back.