A motorcyclist crashed into a police vehicle Saturday night. 55 yr old Daniel Boggs was seriously injured when he was heading east on Ulmerton road just before 11pm Saturday night. A Pinellas County Sheriff's Office transport van had just accelerated after being stopped at the light at 101st Street North when Boggs slammed into the back of the van with his Harley.  Boggs was  transported to a local hospital with life-threatening injuries. Police think alcohol may have been involved.