By reading your comments, you obviously have no idea what the term probable cause means. In any event, police don't need probable cause to detain someone, only REASONABLE SUSPICION. Look it up. Also, DEA agents can stop as many cars as they want to. Do some real life research on how the various factions of law enforcement operate. You can't know by watching that show, all the information those agents had when they stopped that car. Everything that happens is NOT in the show. Watch it for what it is: Entertainment. Don't try to criticize things that you know nothing about. Know what you are talking about or shut up. P.S. Stop watching all those stupid TV crime dramas. They're filling your head with misconceptions.