The Carmel Police Department officially placed two Ford Police Interceptor utility hybrid vehicles into service.  These are the first two hybrid patrol cars assigned to police duty in Putnam County. The Ford Police Interceptor utility is the gas/electric hybrid police version of the Ford Explorer. Carmel Police placed an order over a year ago, but supply-chain issues caused delays in delivery and equipment installation.  Department officials say they will roll out a marked and unmarked patrol vehicle first to test their effectiveness in the different roles these vehicles perform.