Mixon 170 mph on Instagram.

[*ochocincos*]

If this was on a closed track, that's ok.
But if it's on any kind of public road (express way or otherwise), that's incredibly dumb and risky on his part.
Also, maybe even the dumber part...why on earth would you not think before posting this stuff on social media?
People have notifications when certain people make a post, so multiple people would have seen this immediately even if it was deleted quickly.

Treat social media like an extension of your brand and only post safe stuff, as it could come back and bite you when it comes to employment (as much as I don't fully agree that it should be allowed legally to do that).