One of my co-workers got 2 DUI’s and never went to court. Whats the penalty in Arizona?

I work with an Alcoholic who got a DUI in August of 2006. The cops released him on his own recognizance and his drivers license was automatically suspended. 2 weeks later , he gets another DUI and this time it was a Felony because of the suspended license, and the vehicle was seized (1997 Suburban). He decides to skip going to court and try to out run it. Someone told him after 7 years it will all go away. We worked in a construction crew and the boss finally fired him for being hungover all the time. I think if he went to jail it would help him sober up as well as keep the streets safer. So, if I turn him in, what will the penalty be for him?