Unlikely. Unless they have a search warrant. A five month window is clearly unreasonable.
Certainly. In many cases written consent would be difficult.
No. Unless you are being arrested or give the officer consent to search the car a simple traffic infraction alone does not give the right to search a vehicle.
Totally! He is a cop =D
If he has grounds to search (ie - he believes you may have something hidden like a weapon or drugs) - he doesn't need your consent !Added: Or sees, or smells something.
ask the cop
not if you let him search it
If he has probable cause to believe that a crime was committed, is being or will be committed, yes. That's true in any state.
abondon ship
Generally, no - unless there is reason to believe that it was just used in the commission of a felony, the police can not search your vehicle without your permission. So during a routine traffic stop, for example, the police must generally get your permission to search your vehicle. But don't be an idiot - if you're riding around with a loaded .45 under the seat, you're gonna be in trouble one way or another.
by abondon them
If a vehicle is searched without the permission of the owner, the officer must have some other justification for the search. This can be probable cause, search incident to arrest of an occupant, inventory prior to towing, abandoned vehicle, or other reasons. If you can show that none of the these circumstances existed when the search was made, you may be able to have the evidence obtained from the search suppressed in court.