help needed and tips, for a car show.

I have never done much photography of cars, except for quick snapshots.
I have a friend that was going to do a car shoot for an outside car show on the 16th of Aug. but other plans made it impossible for him to do, and another guy was going to do it, well he also had to change plans, So stupid me volunteered to do it, besides I need the experience to do it.
I have three weeks before the car show. And right now I'm trying to plan how I want to shoot.
I'm in the process of trying to get permission for a roof top access to shoot a semi-wide angle of the cars in town with the people.
And I already have a slight knowledge for the lay of the town as far as the shade and bright sun light.
So here is my problem now, I really don't want to out do my friend and take away any further shoots from the club, However I do want to make an impression.
What else do I need to do for a plan or am I going from it all wrong and backwards?
Any other tips on using a UV filter or a Neutral Density filter, Can I stack them together or choose one or the other?

You will need a Circular Polarizing filter for sure, get rid of those nasty reflections in the windows and paint. I find using a LONG focal range, makes the photos turn out better. I used the 200mm position of my 70-200L for my car photos, and i tend to like the result alot more.

Good luck, and happy shooting my friend.

Rylan,
I have a slight problem with my old 70-300 mm lens, it works fine with me older film camera, but I'm stuck with either f/4.5 or a f/5.6 with my digital camera.
and thank you for the tip.

Ive used a 75-300mm to shoot cars with, and they turned out great at 200+ at f/4.5.
Just stick a C-PL on the end of it and you should have good results :)

icicle, if you Google "car show photography", you will find a lot of advice to consider.

Cheers,

WesternGuy