TV writers

I sometimes wonder about TV writers. I was watching "Numbers". An ambulance driver is suspected driving patients who are receiving illegal donor parts. The agents go to the ambulance garage to ask after the driver. They are told that he is just driving the ambulance in. So the agents turn and start gesticulating towards the driver. Of course he turns the ambulance and tries to escape. Would the agents really be so stupid as not to wait until he has left the ambulance and has perhaps come to them?