There's a bill that's been held up for some time, called the Hot Car Act. It would mandate safety features like you mentioned. Some cars already have these features, Hyundai for example has a quite robust one. https://www.kidsandcars.org/2019/07/31/hyundai-to-expand-chi...
There are also third party devices being made to add these features to cars yourself. These third-party ones are generally a thermometer and a weight detector that can sound an alarm and send alerts if it gets triggered. Here's one of those: https://www.sensealife.com/
There are also third party devices being made to add these features to cars yourself. These third-party ones are generally a thermometer and a weight detector that can sound an alarm and send alerts if it gets triggered. Here's one of those: https://www.sensealife.com/