WopOnTour's last post was August 10, announcing he was back after a month vacation. Sadly, none of the mods or admin involved with gm-volt knows what's behind his nearly two month absence since that post. We have not heard from WOT one way or the other.
At this point all I can hope is he's enjoying another extended vacation. His absence is definitely felt. As a GM employee, his insight and knowledge of the Volt is unsurpassed.
He has "gone dark" for extended periods in the past sometimes for a month or so at a time. I know he's back when I see him posting answers to someone's questions. I have sent email's to several addresses, but so far no response.
His last tweet was Oct 19, 2016. So that does not seem to be an active account. https://twitter.com/wopontour