I wouldn't do anything to get a buddy cop or one I don't know personally in trouble. I obey the rules. If there is a shot gun or AR somewhere in the vehicle I assume I'll pretty quickly be able to get to it if the LEO is shot or my life is truly in danger.Good call. Contrary to what historians say, the Tet Offensive did not destroy the VC. The person riding along could be an infiltrator.
To answer the OP, most departments have a policy against it. If you know the officer, he might not enforce the rule. Either way, I would be honest with him.
I wonder if my LEO would respond to a call like we had in Evansville a couple months ago where the PO was dispatched to a house where a dude was holding hostages and basically ambushed the cop getting out of his car. Would I not be put into that kind of situation or would my driver call off or drop me off on the street.