Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Only useful for a car, not a truck. . .

This is a single strip of plastic intended to be placed as a sort of persistent wheel chock such that when your tire encounters it, you feel it and thus know to stop your car at that point. Unfortunately, it isn't so useful if your vehicle has large tires (any size truck or large SUV tire, for example) as they're only about 1.5" tall and most large tires would easily roll over this without much, if any, feedback that you were "there."If these were twice as tall, they would be useful to me, but I could definitely see their usefulness for cars, particularly ones with low fascias, such as sports cars, that couldn't clear a taller obstacle.