I’ll let the blotchy, somewhat slow-loading video above tell the story (lesson learned: don’t use Adbrite for your embedded videos), but I’d say that’s pretty cool. It’s far from being the most advanced roller coaster, but it only cost the engineering student about $5,500 in materials. Who knows how long all the construction and calculations took, but man, it’s pretty cool having a roller coaster in your own backyard.