Yeah. Anyway, biker leaders are leaders for a reason (maybe greater intelligence and perception), and most of them would follow their crew leaders through fire. When they heard Ben's bike leaving, they did no second thinking. Also note that The Polecats were broke. Only Ben stood against this oportunity of gaining money. I'm sure the others were eager to gain a few bucks.
"Now, Bolus returned not long afterwards, the trio did what they had to do and their limo followed the band. Since Corley required frequent pit stops they would easily catch up with them."
That's another theory to the blackmailed bartender.
Anyway. I'm sure nobody cared about someone missing. Corley only cared about riding on a bike again and The Polecats cared about following their leader and gaining money. That's it.