Yes, but you never HAVE to enter their car unless you are under arrest. Unfortunately, if you ask, "am I under arrest" the answer will usually be yes even in situations where they would have let you go.
Yes, you can be.
With probable cause, yes he can.
Only if they don't have probable cause.
yes, but only after they arrest you
No, loud music does not establish probable cause to search your car. Unless the cop has a warrant or your permission to look through the car, the search is illegal. Always remember, if a cop says, "Do you mind if I take a look through the car?" or something like that, it means he doesn't have the right to search your car without your permission, so you should always say, "no." Saying "no" doesn't give him the right to search the car. It means he can't.
Stand still - and accept it ! If they have grounds to carry out the search - and you try to stop them - you can be charged with obstruction !
yes and no
yes, because it is still a cop's car... he/she just isn't in it at the precise moment.... my car is still my car even if I'm not in it
I'm pretty sure a retired police officer can not search you for weapons (frisk you) and if they did then they could be charged with impersonating a cop. If that person that is frisked is under the age of 18 then the retired cop could be put on the sex offenders list.
That seems to be probable cause to search, so I'd say yes. Although it depends on your state laws.
Totally! He is a cop =D
The question does not contain enough information to allow a reliable answer to be made.