For a hundred years, we drivers have endured spilled soup, exploding soda, and scattered belongings.
No longer. Stayhold, which attaches to the floor of your trunk with Velcro, keeps objects wherever you put them -- no matter how many potholes you hit in the parking lot.
It's not for nothing that the trunk is a minimally designed space. It's versatile, particularly when it's full. But it also means that it's not a great place for small or even medium-sized objects that you want to stay still.