I was playing with time lapse video today using the Sequence Mode on the camera on the Nokia N95, which takes one picture at a pre-set frequency. You can then stitch them together using a program on your PC.
This is my first attempt and it's not the best. The smallest interval on the Sequence Mode is 10 seconds which is too long for this type of subject. Also, because the view is constantly changing some weren't in focus etc.......
Full instructions are available on Finest Fones.
Incidentally, you might not want to use a car journey as a subject. It took me ages to obscure the number plates that were visible as I had to do it manually.