It's hard to tell, but if those are amber lights this might be a car that's been tricked out to act as a chase or lead vechicle for a 'wide load' hauler. I only offer this as a possible alternate explanation.

And the fact that I saw for just a moment, that the guy was indeed in uniform.

I would be more inclined to believe that it's traffic contol or something similar than a real patrol cruiser. I mean, it's a Taurus wagon!

No bubblegums, so it's not for pursuit or rapid deployment. I think spotweld has it right, it's a safety vehicle for traffic control, or possibly a means of getting officers out to the field for things like accident analysis.