Continuity mistake: In the episode the team is discussing the unsub. He was a man who believed he was Tara's brother. They do not know his name yet. JJ says "He must have put Gabriel's whole life inside of Desmond". Only later does Garcia find out the unsub's name is Desmond Holt. (00:15:22 - 00:18:20)
Continuity mistake: At the end of the episode, the team and their SUVs are spike stripped and then hit by a semi. When the team is shown in the SUVs and when the SUVs are shown hitting the sticks, the SUVs are eleventh generation Suburbans, but when the semi is shown hitting them, they're ninth generation, at least nine years older.
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.