Instruct: Classify a review into positive or negative sentiment.
Query: Shouldn't be Necessary!

It's a real shame that one has to go out and buy these suction cups after spending several hundred dollars on the Nuvi. Yet, the cubs quickly become fused to the windshield (no matter what season), and if removed often, they quickly lose their stick. Thus, if you want to move the Nuvi between cars (the only advantage over having a built-in GPS system), then you must buy extra cups for each car. I found Garmin impossible to contact!