 Complete the following phrase:  The race replaced the Grand Prix of Montreal in the Champ Car circuit, and was held in a rural zone north of Montreal. The circuit had previously held a number of significant open-wheel championship events: USAC IndyCar races in 1967 and 1968, before the establishment of the Champ Car Grand Prix; the Sports Car Club of Americas Formula 5000 championship held events in 1969 and 1970; and the track held the Formula One Canadian Grand Prix in 