Can I ask what settings you have your camera on while taking the rolling shots?
I don't know if you're canon says the same thing my nikon says. I put the camera in S mode so I only have to worry about shutterspeed. For example if you're rolling at 30mph set your shutter for 1/30th, 40 = 1/40th, etc, etc..
I hope that's what you were looking for.
I like 1, but seems a tad bit out of focus. Number 7 looks more in focus.
Love the cars, I own a Subie myself2.5rs's are where it's at!
Good shots man.