I finally found the information on the Holy Cross Abbey Antique and Special Interest Car Show. I've registered this year, but am taking my ICE convertible, not my electric car. It's a great show, the local Pikes Peak Mercedes Club will be attending. I'll put the information from our calendar page below:
Holy Cross Abbey Car Show, Canon City, CO - May 16, 2020. This is a great show near Pueblo, CO. Arrival of show cars starts at 6:45am, goes until 10:00am. The show goes from 10:00am until 3:00pm. It's on grass (very comfy on a hot day) and always has good food and drink vendors. Some exotic cars seem to always show up. The address of the Holy Cross Abbey is 3011 East Highway 50, Cañon City, CO 81212 and the map locator is here. This show has limited entrants, so register early for $20 per car.