Great pics Dean, and even more on your website Top locations too. And cars. Not to mention equipment and technique! This is one style of photography where you really need to get everything together.
It would be really interesting to know what rigs were used for which pics, instead of guessing. It looks to me like you do a lot of car to car, presumably with the rig suckered low on the side. Sounds like a three man job, and two cars. Quite an operation, but maybe the upside is you don't have to do any PP to get rid of the rig, and you've got a lot more positioning options than with a single long pole stuck to the roof.
Tell us about lenses, shutter speeds, driving speeds. I'm also thinking that IS/VR will be very handy for this kind of thing. Go on, spill the beans
Thanks Hoppy.
I'll spill the beans on some of the stuff.
My rig is made up of 2 suction cups, 2 poles (the metal type, not the people) measuring roughly 10ft when pieced together, 3x superclamps and a magic arm. All of the shots that I posted were taken using this setup or a variation of, none were car to car, or attached to another car.
The upside to using this method is that you have full control. You don't have to rely on other cars, drivers etc etc. The downsides are that the post processing can take forever and sometimes it's handy to have others around to help with traffic flow etc (was never really an issue with the supercars as all my friends wanted to tag along). Another downside would be that as you suggest, you are limited to rig placement however, if you're creative enough if it's not too much of an issue.
So lenses shutter speeds etc etc: I tend to use a sigma 10-20mm (on my rig only D200) for most shots, especially if I need the entire car in the frame or, I want to make use of a locations features. If you have a longer rig, you can use a greater focal length (my rig can extend to 15ft but it's a tad wobbly). If doing detail rig shots, as per the F430 engine bay, I'll use the D3 with 35mm f/2.0 and only half the rig poles (so 5ft).
As for shutter speeds, these can vary greatly depending on how much motion you want or, if you want it to look real or not! For most I'll use 1-3 seconds however, you could use as long a shutter as you like if you have little ambient/enough ND's.
Speeds: All of mine are done at less than walking pace, sometimes barely 1mph. This reduces risk of wobble from the road.
Full rig used:
This was the hardest shot. Try rolling backwards around a hairpin bend (30 limit) with little visibility, in a car with little visibililty, with the brakes hardening as the engine is off, the car being worth a silly amount of money and with a 10ft pole sticking out of the bonnet.
Queue lots of wierd looks, people stopping and asking questions, people wanting me to give it some revs etc etc. :bang:
After an hour of rolling backwards around a hairpin and repeating, I got the shot in the bag. The sun was a little too high by now as you can see by the blown out windscreen.
Full rig used.
Half rig used:
Full rig used:
Personally, I'm no longer a fan of rig shots. Far too many people are doing it now and producing medioker images. It's really put me off. I much prefer a good pan or tracking shot, there so much more romantic although I have limited experience with these.
http://farm4.static.flickr.com/3506/3258193526_551fa3f349.jpg
I'm also experimenting with other types of motion shots, I'll keep you updated
) Just you, a big pole (metal type 
