Definitely make sure the fund are in your account and have cleared before handing over the car.
Get a Blue form and a Yellow form from the traffic department. You need to have him complete the yellow one which you hand in once he has taken possession of the car.
The blue form he needs in order to register the car in his name, like Doomsdaya says maybe do this with him at the same time, you dont have to though, but its better. He will also need the cars registration papers and a letter of sale, with both your names and both your ID numbers on it.