This company is selling backyard roller coasters you can build yourself.

If you’re looking for a bigger DIY challenge than an Ikea bookshelf, Magictecture now has preorders open for its Coaster-in-a-Box kits. Only a couple of people are needed to assemble the modular track pieces using standard tools, and the self-propelled ride vehicles can climb hills as high as 25 feet tall and reach speeds up to 25 mph.

The catch? The smallest 100-foot layout is $110,000, while the cheapest single seat kart is $85,000.

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