How to tell if you're being pulled over by a legit police officer<br>Check to see if it's a marked vehicle. If the vehicle has police markings, it is highly unlikely that it would be an imposter. A civilian driving a marked police vehicle would most likely be spotted very quickly by an actual police officer, and that individual would quickly get arrested for impersonating an officer.
If a vehicle looks like a police car, it is probably fake. 
( z1 probable :domain ( z2 fake :ARG1 ( z3 vehicle ) ) :condition ( z4 look :ARG0 z3 :ARG1 ( z5 car :mod ( z6 police ) ) ) )