Series promoteer WC Vision LLC announced that David Caldwell has joined the series’ Competition Department as Director of Operations.Caldwell, 43, has served as Pirelli World Challenge technical program manager for General Motors (ABOVE, with GM's champs) leading the GT (Cadillac ATS-V.R GT3), GTS (Camaro Z/28) and TCB-Spec (Chevrolet Sonic) programs....