So I really put this no-spill bowl to the test! I filled it halfway with water and then put ice cubes in it. I then put it on the floorboard of the passenger seat of my car and drove to the park with my dog (he always gets cold water after good walk). I drove a little crazier than usual: some hard-ish stops and sharp turns. We made it to the park with no spills. Very impressive. You need a no-splash, no-spill bowl? This is your bowl. 

Tip: to empty the container in full and dry it out, turn it inside out. Otherwise, you'll leave water in it to sit.