[A trader spends $19,000 betting 'Tesla Roadster will fly for at least 1 second,' with a return rate exceeding 898%] BlockBeats news, October 16, according to the Polymarket page, trader dromedaryy spent $19,200 betting 'Tesla Roadster will fly for at least 1 second.' Currently, the position is valued at approximately $192,400, with a profit of about $173,100, yielding a return rate of 898.51%.