The premise that the FBI "Organized Crime Bureau" investigating counterfeiting is incorrect.The Secret Service, both when under Treasury and now under Homeland Security" has jurisdiction and investigates counterfeiting for both American and foreign currency regardless of "National Security" issues.
When Vinnie tells Frank to pull over and they get out of the car, as the car parks and then later drives off again, it is clear that they had parked the car in an 3-way intersection. If they hadn't been filming a TV episode, this would be completely dangerous and illegal.