Let's see: heavy rain, followed by heavy winds, followed by freezing temperature. Must the be season for indoor racing. Motorcycles did it most often. At the Agrodome and the Cloverdale Fairgrounds mostly. Some indoor foreign stocks as well. Again at the Agrodome as well as at B.C. Place Stadium. Probably other places as well.
An ad from the early 1960s:
Of course there was always outdoor scrambles during the lousy months of the year. Let's see: rain, wind, freezing. Who's idea was that?