614
Tesla reintroduces 'Mad Max' Full Self-Driving mode that breaks speed limits
(www.engadget.com)
This is a most excellent place for technology news and articles.
That I understand, but as the person I replied to said that I hope you read, people intentionally go 50 in the 45.
So the grace window you mention is irrelevant; you'd be doing 51 in the 45.