Accident on M62 westbound J12-11, 2am

Did anyone pass there last night? I saw the accident happen - well heard the skid, the bang and saw a pair of lights rolling up the embankment at a rate of knots - and phoned it in. Was just wondering if anyone saw what happened later. A driver of ours passed 10 minutes after I did and said it looked like it was van shaped but then said they wondered if it was a minibus. Given it rolled all the way from the bottom of the embankment to the top 30ft up, I hope to god it was a van.