Wow! that was a close one.
i have never been pulled over by a cop ever, and i have been driving since i was 15.
I, personaly, wouldnt know how to react in a situation like that. I know many people in my situation who have been pulled over by police officers, and never have they been deported.
the wort case scenario would be the impound of their vehicle and a ticket, but thats it. I think your over reacting by claiming that police officers would deport you for driving while undocumented; well atlest over here in souther california.