This is a great start. I do agree with Mike-in-Orange about the intro. It is long but if the speed was increased it should make it "feel" shorter. Here are a few other items that I would suggest to be revisited.

1. Image transitions – I think these could be made more fun and cutting edge as our cars are. Knowing how cool these cars are I think a more mainstream or "Web 2.0" look would really wake up the site.
2. Navigation buttons – The first time you visit the homepage the load is neat seeing them fall into place, however once I go to another link and then decide to go back the buttons should already be there ready for me. In other words the buttons should only load once.
3. Typefaces – These can use a more modern touch as well. A cool sans serif font would work well with the style of the car. If you wanted to go a step up I would even suggest searching for a cool art deco font to really bring the character of the car into the site design.
4. Under Construction graphics – I realize these are temporary but again the hardhat, the way the type comes in & the font are all dated.
5. Image resolution/sizing – Again as Mike noted this is a huge area where a site can fall short. Seeing an image that is distorted or is too low of a resolution doesn't lend well to a visitor's experience. I'm finding that half of web design is just getting the production side of things in proper order so the end result is stunning.

I am a Graphic Designer by profession who has recently ventured into the area of Web Design. I have 8 years experience in print & sign design so going over to the web is quite a change. Here is my personal site. If you have any questions or want some specific examples just let me know and I'll do some research and pass along some links.