Its so unusual to see an antenna on a car or service truck, the gas company has radios as a back up but even police cars barely show an antenna.
I saw an white official ford explorer, it had an an antenna farm on the roof, it had a 4 or more those pill bottle sized antennas, a tall vhf antenna with a elongated base, 2 more 12" whips maybe uhf and a 3" stubby wire antenna, as well as alot of band aid sized cans on the roof, maybe lights.
I don't know why that car would need so many ways to communicate, I'd love to know the agency
I wonder if the explorer came with a option to suppress rf to its electronics.