My son and I saw it a couple weeks ago. It seemed to me that they tried to recreate what they thought was a typical 1960's era outlaw motorsickle gang movie, but in my opinion they overdid everything. The "Chicago" accents were a bit too much. The leader of the gang was named Johnny, naturally and to demonstrate how tough he was, any time he talked he had a cigarette dangling from his lips while talking. Sometimes, it was lit, other times not, but by golly there it was dangling.
On the other hand, the day we saw it, the outdoor temperature was 101 and the air conditioning in the theater was very cool. Wish I could have said that about the movie.
Fred Z.