Twenty Four GT3 cars are in a shootout slot car race to determine which 13 cars advance into the 2022 GT3 Slot Car Proxy. Cars will be run for two minutes on the MID-BC track.....top 13 median times move onwards into the GT3 Slot Car Proxy Series! Which cars will make it, what configuration, what type of body, we will find out! The GT3 Slot Car Proxy Series is hosted on Home Racing World. www.hrwforum.com. Slot car proxy racing.