It almost seems this is common enough that eventually cars sill have a feature to prevent heat death. I think of Tesla’s dog mode but for humans.

Caveats:

• Not saying parents have no responsibility

• Not saying auto makers have sole responsibility

• I understand the “slippery slope” argument that this will lead to parents leaving their children on cars

• This is just an extrapolation into the far future, like 100 years or so, when we have metals far stronger than steel protecting your car door and sentient robots.