It's hard to believe but at least 12 children have died so far this year after they were left in hot cars. That number could drop over time thanks to GM and a new system warning drivers they may be leaving someone behind in the backseat.

According to ABC12, this industry-first system monitors the rear doors. If either door is opened and closed within 10 minutes of the vehicle starting, or if they're opened while it's running, the vehicle will sound a chime when it's turned off. It will also display a message reminding the driver to check the rear seats.

This first ever feature is standard on the 2017 GMC Acadia SUV.