I was in the parking lot of the market the other day and encountered the problem that this product solves. It was 100 degrees that day so I didn’t want to put my daughter in the hot car longer than necessary. I decided to load the groceries in the car first but then realized I was parked on an incline so the cart kept rolling away from the car. I was totally struggling and didn’t even know how I was going to do this until a very kind lady came to my rescue. Even if I didn’t have my daughter in the cart, I would not have been able to load this shopping cart but of course the thought of my little girl rolling away into traffic was enough to send me in a panic – I even contemplated ditching my entire cart of food! And this was Whole Foods so it was like $270 worth of food! If only I had this Kart Katcher. One end ties to the inside of the trunk so it is always there and the other end has a strong velcro to attach to any part of the cart. And for $5.95 I think we can all agree that it is worth it just for the comfort and knowing there is an extra hand in case we need it. Get it at the Kart Katcher website for $5.95.