sonictheory,
I think the putrajaya bridge would be quite nice. Wait for a suitable time, either sunrise or sunset. Don't go alone. If can, bring a few photographers and some friends to convoy along. That way, your friends who wants their car pics taken nicely could also be done. This also adds to the safety of the group. Go on a sunday morning, where there should be a lot less cars and people. If you're taking photos in the early morning, where it's not so bright, bring some flourescent/bright light and have someone take care of the oncoming traffic. Sort of like a traffic police men to indicate to other car users that some "event" is happening and can divert the traffic to the other lane.
Another simple place would be One Utama's rooftop car park. Or maybe Lot 10's rooftop car park, or any rooftop car park with a nice background. I'd recommend personally to take photos during morning or evening light, where the light would not be so harsh. Bring also reflectors. If you don't have those professional reflectors, use those silver/chrome sun shade as reflectors. Here, the additional friends would also come in handy to position the reflector accordingly.
Additional items like a laptop would be fun to look at the pics after the photo session is over. Chill out some place with those friends and look at the photos.
If you're having the photoshoot around PJ area over a weekend, do PM me. I'd like to have some practice for car photography as well. hehe
