Walekum as salam

Required documents :

Car istimara & license
If car is on bank loan then u will need letter from bank (4 bank letter u will need 2 guarantor from other nationality).
Umrah visa can b avail from any local agent QR 300.
Exit copy

Procedure:
After reaching Qatar border , on 1st window give istimara for registration , u will receive CR slip.
On next window give passport & CR slip, collect passport and CR slip with exit stamp.(Car Registration)

On Saudi border park the car n go on immigration window for photo and finger prints for ladies there is a separate cabin.
For custom formality the car will be check .
Next go to car insurance pay QR 70 for a week.
Last window submit the CR slip.
Hope this details will be helpful .Remember in dua'a