I was going to work, dropping my one year old off at his grandparents on the way. My purse (with my spare key) along with the rest of my belongings were dumped into the front passenger seat after I unlocked my car. Unfortunately, I also placed my main set in the seat in order to buckle up the kiddo. I was wearing a dress with no pockets. I shut my front passenger door, opened the rear passenger door and finished up the car seat wrangle. I then shut his door, and every door on the vehicle clicked shut in the auto locking mechanism. My adrenaline and panic were instantaneous. I work in health care and I know how quickly closed cars become death traps for babies. The car was not on, and my intention was to be in the driver seat 5 seconds later with the AC blasting. I live in the country, my closest neighbors were gone, all of my means of outside communication were in the car, my husband was at work and within two minutes my baby started crying. I immediately grabbed a rock from my garden and broke the driver side rear vent window. No harm was done to my baby, he ate a snack and took a nap afterwards. I got the smallest cut ever on my hand, none of it hit him during the smash. Window repair is 475 through safelight, insurance wanted a 1k deductible so I skipped out on a claim. I spoke to Hyundai Cares and after I explained the situation I was asked why I was upset that I had locked my own baby in the car. The problem is that I didn't lock him in the car - the car locked him in