What is the statutory duration of a 'regular weekly rest period' under Regulation (EC) No 561/2006, and where is it prohibited from being taken following the Mobility Package I amendments?

1. At least 45 hours; it is strictly prohibited from being taken inside the vehicle cabin
2. At least 45 hours; it may be taken in the vehicle cabin provided the vehicle has a suitable sleeper bunk and is parked in a secure lot
3. At least 36 hours; it must be taken at the driver's domestic residence only
4. At least 48 hours; it can be taken in the cabin if air conditioning or auxiliary heating is active