Stephen Logsdon, 33, is attending second year at the Vette City Con and plans to keep coming to them as long as they keep having them. Logsdon dressed up as Harley Quinn and had handmade almost everything from the bat to the hammer. Vette City Con will be held for their second year of performances and event venues at the National Corvette Museum on Saturday Jan. 27, 2018 and Sunday Jan. 28, 2018.