Thank you guys for all the comments! Could not of done it without my media pass, so big ups for the media pass! Still need lots more experience out there in the field but I'll be back soon with some new equipment for next time......3 car tandem no problem!
LOTS of lens shake my friend. Are you using one focus point or did you leave it in auto? also AF servo! go sit on the side of the road and practice panning, it helps. work on getting that one focus point to stay on the same spot of the car before and after squeezing the shutter. you have potential! get your self a super wide angle, i love mine! drop me a pm about glass if your looking for advice....