Mauston Police is looking for a pickup truck involved in a hit and run accident Monday evening.  About 8pm a Mauston teenager, 17-year old Rayne Karas, was traveling north on Hickory Street when the operator of the pickup in front of her slammed on the brakes and Karas rear-ended the truck.  She stopped but the driver of the other vehicle took-off and never stopped.  The 2005 Chrysler Pacifica that Karas was operating was un-drivable due to fluid leakage.