Help Wisconsin

On a foggy night in Wisconsin my friend drove his car into a ditch, flagged down a motorist, and got a ride back to town. Instead of reporting the accident, he went to his friends and drank beer. When the police came they found him intoxicated and assumed that he had been drunk when he crashed his car. Now he has been charged with a DWI and is facing over $1,000 in fines and a lengthy driver's license suspension. Would it be wise to fight this charge, or is there anything he can do? Should he get a lawyer?

If he was not PHYSICALLY in control of the vehicle at the time of arrest(keys in the ignition but asleep in the back seat),he is going to walk......he need only have his friends testify,and that is it......he WILL be charged with "reckless driving for road conditions" and for "leaving the scene of an accident"....beats the crap out of DUI though.
The cops will say it is circumstantial evidence that the car was trashed,and they found him drinking later.......that wont hunt in court.......just dont let him cave in to pressure....he WILL walk.