hello,

First & foremost you need to have the Visa to Dubai & a hotel reservation, so first find a cheap hotel & book for at least for 2 nights & ask them to arrange for the visas. It will coast you AED. 250/= per visa through a hotel. Then you got to apply for Saudi visa locally here in Qatar. It will cost you Qr.110/= per visa. (a person from souq jabour will help you to get the travel visa)
Then the vehicle you planning to drive should be registered under your own name. (if not a letter from the owner authenticating, then go to Madina khalifa police station & certify the letter for traveling) then travel, from the Saudi border you need to obtain a temporary third party insurance for the vehicle your traveling.
Then drive approx 1300kmts to reach Dubai.
Its easy…… only thing from the Saudi border it will take around 1.5-2hours for vehicle queue, checking, and to avoid STUPID land cruiser drivers who will come & pork their vehicle in between the long queue…..