Instruct: Classify the given review into positive or negative sentiment.
Query: Worst bike rack ever!

I have been biking/kayaking for years and have used a variety of products for transportation and this is by far the worst bike rack I have ever seen/used! First, the rack connects to the car with a washer and bolt, so it needs to be re-installed every use, rather than a generic bolt that works with a tow ball. While the product is on the car, the trunk cannot be opened or shut (we have a hatchback). Also there are two other bolts used to construct the rack and each one requires a different size wrench. Its annoying to set up and is not meant to be setup/removed regularly.