Forgive me for not knowing the area, but I can't see them actually driving into McDonalds there?
I can think of several occasions at work (full disclosure, I'm a police officer) where there has been two police vehicles in convoy like that (or a police vehicle following an ambulance) and you'd put the lights on like that to skip through red lights, that I'd consider for a legitimate police purpose, no McDonalds involved.
Entrance to the one-way system is just out of shot which brings you back to McDs. It's a weird road layout & a PITA to get round with a bus.