These were both taken on the fly while a passenger. I don't drive very often as it is, but my camera is ALWAYS in hand when riding. The Camaro was at about 70mph, and the Volvo around 45mph. The Volvo was a buddy of mine, and we were headed home from work when I snapped it. This photo actually got the car sold for him, so I'm rather proud of it!
These are the unaltered versions of the photos I have on my site. These were too static for my taste, so I added a bit of a blur to both of them with photoshop, and they came out pretty good. Given my knowledge of photoshop (nil), I'm pretty impressed!