A man from Wellington County made a big mistake when he tried to sell a sports car online. The 55-year-old agreed to meet with prospective buyers on Wednesday. Guelph Police said they first met up in the north-end of the city, then went to a parking lot to check out the 2016 Lexus. The buyers, they noted, were actually undercover police officers. Police said the man was arrested and charged with possession of proceeds of crime over $5,000 and trafficking in stolen goods over $5,000.