Trivia: Although only in flashbacks, "Nelson's Sparrow" was the first episode to feature Gideon since Mandy Patinkin's departure.
Trivia: Ben Savage plays a younger version of Mandy Patinkin. One of Patinkin's most famous roles (and also one of his personal favorites) is Inigo Montoya in The Princess Bride, which also featured Savage's older brother Fred.
Chosen answer: Black SUVs are common police, military and dignitary vehicles around the world. It is not too much to assume they could be rented or owned by the police forces in the areas.
kristenlouise3
Other people have explained it but fore more information, federal cars would most likely be brought to the airport from the nearest agency, so they can drive out to their locations especially in rural situations.