The driving area at Pitt Meadows (used for Nancy's track days) is being expanded to almost twice it's current area
To my mind it is not inconceivable that with the will, and the right people talking to the right people, this momentum could be continued to include paved roadways that would form a modest track.
The site is currently used by several types of Drivers (Riders) for skills training, including the Police. Adding further to it for a purpose built road course could legitimately be argued as positive facility addition for the Lower mainland.
There is lots of space - Overlay of Mission at Pitt as a comparison