He/she probably shouldn't have run but he was probably freaked out by the "Motorcycle Gang" that was hanging around considering he/she just hit one. I could see him wanting to get out of that part atleast.
Now if they were smart the SUV leaving would be the best thing for the bike rider. If the SUV stays and they call the cops out to report the incident. Then they are going to report "He was riding on his front wheel in the corner". Instead teh guy on the bike can now just take his bike home and reflect on what a jackass he is.
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 lifts - R.I.P.
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