So on request I have done a second one! This time to do with photoshop , not photography.
This tutorial is to show you how to create images like this:
-- OLD IMAGE REMOVED (imageshack) --
The car appears shorter than normal, however the wheels are normal, creating a toon-like effect.
Right then, lets begin. First choose your image. Preferably from the side, as that is easiest. The more off centre your image is the harder it will be. I may extend this tutorial later to include images which are not at all sideways, as they are much harder, but lets begin with the simple (and very easy) initial method.
1) Copy The Wheels!
Here is my chosen image, opened up in Photoshop.
-- OLD IMAGE REMOVED (imageshack) --
Use the 'elliptical marquee tool' and click and drag a circle around the wheels. You want to try and include the flared wheelarches if there are some, but having a bit of wheelarch on these layers helps a bit later on. Remember, if your picture has a reflection in the ground (like the R8 at the top), select the reflection of each wheel as well, so when you sort it all out later, the wheels in the reflection aren't squashed.
-- OLD IMAGE REMOVED (imageshack) --
Once you have selected them (do each wheel separately!!), Ctrl C (copy) and Ctrl V (paste), making them into new layers (do not use Ctrl X (cut)!!!!) Keep the two wheels as separate layers, then make them invisible (by clicking on the eye symbol next to it - red box)
-- OLD IMAGE REMOVED (imageshack) --
Then use the free transform tool to literally squash the car (not too much, remember to leave space for the wheels). If you squash it too little, it won't look good enough, and too much, and there will be no gap between the wheels, making it look stupid. We want to keep it looking slightly believable.
-- OLD IMAGE REMOVED (imageshack) --
Then you just make the layers visible again, and move them to the areas. Use free transform, skew, and distort (and some others if you wish) to make it fit as best as possible. Don't worry about rough edges too much here, just try and line it all up. And a good tip here, especially on fast cars, is to make the rear wheel slightly larger than the front, becaus it looks cooler.
-- OLD IMAGE REMOVED (imageshack) --
Once you have done that, you can now use the 'polygonal lasso tool' to cut out parts of the wheelarches to make it not have two non-lining up panel gaps on the car and stuff like that. Spend some time here, as this is where you make it look believable. Use all the tools you like to shape, cut and move it into perfection. Don't forget all the shadows and road as well. That can have a big effect too.
So once you've done that, merge all the layers and save it.
My final product from here:
-- OLD IMAGE REMOVED (imageshack) --