I hope no one has left their child in the car while they read the article as it is so long the child may die of old age. In all seriousness though, new vehicle

I hope no one has left their child in the car while they read the article as it is so long the child may die of old age. In all seriousness though, new vehicles are required to have a method of alerting "Baby Brained" parents of this dangerous situation. While that may help the more affluent new parents, there should be a low cost Bluetooth to Smartphone temperature / environmental / location sensor system for the masses. This might he a nice niche project for someone looking to solve an important problem that will save lives.