State Police are looking for a white pick up truck they say hit another vehicle at a high rate of speed on the interstate, then took off.The incident happened just before midnight on Christmas eve, in the Southbound lane, near the Carmel exit. Authorities say the victim’s vehicle was hit from behind. The impact caused it to go off the road and into some nearby woods. We’re told the driver was shaken up but otherwise not hurt.The pick-up truck suspected in the hit and run is described as a white G.M.C. extended cab, manufactured between 1999 and 2002.State Police say there will be substantial damage to the front end of it.The truck was last seen traveling South. It may have exited at Etna-Dixmont.Anyone with information is asked to call Trooper Michael Johnston at 866-2121 or 1-800-432-7381.