This is the Vine that has gone viral in a big way. It was first posted by user Alex Stack accompanied by the appropriate caption: "Did I just f*cking witness this no f*cking way."
According to an article in The Lansing State Journal:
A Kentwood man was taken to Sparrow hospital with serious injuries after the pickup he was driving veered into a median on Westbound I-96 and launched over a guardrail into Sycamore Creek Friday, according to Ingham County Sheriff’s Sgt. Matthew Flint.
The man was driving a pickup towing a utility trailer carrying a riding lawnmower at the time of the accident. The 59-year-old was extricated from the vehicle by a Delhi Township fire department crew with the help of Lansing fire department.