the bank will only give you an authorization when u deposit the amount that is left for u to pay .. otherwise .. u can not pass the uae border ... u can only go to oman with that car ... unless u own the car .. u cant go there .. and i have no idea about if its ur friend's car .. u should call and as the saoudi embassy in dubai ..
dude .. u can get a ticket to doha for 850 derhams .. why dont u just go for that ? that's what am doing at least