Why did he start in last place? I suspect Nascar was pressured to prevent him from getting his 7th championship. Only Richard Petty and Dale Earnhardt
What can't be denied is that inspectors ignored his car until the last minute, then "suddenly" have an issue with his A pillars. http://www.nascar.com/en_us/news-media/articles/2016/11/20/jimmie-johnson-starting-from-rear-chase-for-nascar-sprint-cup-miami.html
That was instantly corrected and made fine and dandy, but put him in last. Seems to stink like 8 week old fish guts to me. Just what about the A pillar was noticeably "modified" isn't going to be said. It was all it took to fake a reason for a reinspect to pull him from 14th starting position to dead last though.