Continuity mistake: Just after the paramedics witness the purse snatching, when Johnny and Ed take off after the two purse snatchers, there are four cars parked at the curb in front of the squad, but just before Johnny leaps over the white picket fence, behind him we see that there are now six parked cars in front of the squad.
Continuity mistake: While Ed is in the field with John and Roy, it's the three of them sitting in Squad 51 when they're en route to their destinations, but in some shots of the moving squad Ed is not seated between them, such as when they respond to the cliff rescue. Additionally, after the purse snatching incident, when they head to Rampart for John's hand injury, only one person's in the squad as it backs up to receiving, even though it should be three.
Continuity mistake: When Ed chases after the possible OD into the car wash, Roy sits at the passenger side of Squad 51 to contact dispatch about the sheriff's ETA, but each time it cuts to the car wash employee the squad is empty behind him, even though Roy is still there in his closeups.
Answer: It is standard practice to wet down driveways so that they stand out in a long shot.
stiiggy