 Shortly afterwards, he and his partners purchased CART's sole engine supplier, Cosworth, and in 2006 Forsythe and Kalkhoven formed the Grand Prix Association of Toronto to purchase control of the Molson Indy Toronto, one of Champ Car's marquee races, from Molson.In 1999, Forsythe expanded into track ownership, acquiring facilities in Monterrey and Mexico City, Mexico in partnership with CIE, as well as purchasing a stake in the Rockingham Motor Speedway in Corby, England.During the Champ Car/IRL merger in early 2008, Forysthe elected to fold his team rather than race in the merged series.