US marshals raided and shut down a booth at CES on Thursday afternoon, serving a court order to the Chinese company displaying a $500, one-wheeled, self-balancing electric skateboard, Bloomberg Business reports. This product may sound familiar -- Silicon Valley startup Future Motion debuted the Onewheel, a single-wheeled, self-balancing, electric skateboard at CES 2014. The company also held a successful $630,000 Kickstarter campaign to fund its production. We tried out the retail version of the Onewheel in November 2014 and had a lot of fun with it. Apparently, Changzhou First International Trade did, too.