There would be no chance they'd use the runway to race on. They only do that for defunct, abandoned, or non-busy airports. To close one down that's newly built to help bring traffic to the track? Not a chance, it would be busier on race weekends.
They are probably building it to allow the high rollers around north america to come to their garage condo for the weekend and race their pretty cars. As well, if this track attracts a few racing series perhaps of the international variety, the drivers and families would fly in just before the race after the crew gets there.
They would have to be some high rollin prima donna's though for an airport to be the deciding factor over a sedan ride from YYC.
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