Imran Sarwar (Rockstar Norths lead mission designer and producer of GTAV), talks to Tim and Dan of GTA5 O'Clock.
Its an AUDIO in VIDEO FORMAT! (So no need for full-screen).
Car Customization.
All the usual things you'd expect like:- paint jobs, wheels and tires, engine tune-ups, turbo etc, (and the horn), as well as more unrealistic stuff like nitro, roll cages, armor-plating and bullet-proof tires.