They actly still did declare a champion in it last year (must be EVERY time they run Wings?)...not much PR in this story tho...(& I realize that doesn't mean anything about the question if they ran weekly or not, but on the list of champions, there apparently still would be for the Winged cars...)
http://www.wilmotraceway.com/news/?i=96739
"Jake Blackhurst of Hanna City, IL won his first ever Wilmot 410-winged sprint car series championship on August 21"