The Daytona Beach Police Department (DBPD) is the primary law enforcement agency for Daytona Beach, Florida. There are 241 sworn full-time police officers, 105 sworn part-time officers and 81 civilians on the force which is headed by Craig Capri who serves as the Chief.
According to Amtrak's website (select stations, then midwest) there are 40 Long-term Parking Spaces at Kirkwood. I don't have any experience with KWD, but I've left my car at various stations in IL and IA for a month at a time with no problem.
Long term parking is located across from the station at the America's Best Value Inn on Peachtree Street. First park your car, then pay for parking with the desk clerk inside then hotel. Return to your car and put the parking ticket on your dashboard before you board the train. Enclosed Waiting Area.