It was taken at Japfest 2013 on the fastest entry to a corner I have shoot in drifting. Cars come over Avon Rise at almost 100mph before initiating about 25 feet away from where I was stood.
That explains why there is so much motion blur in this image when the shutter speed isn’t particularly slow. 1/100th of a second wouldn’t normally get such a long, streaking background blur. The closer you are, or the faster the car is moving, or both, means you’re spinning on the spot pretty quickly as you pan. The shutter speed can be faster than usual but your keeper/fail rate will be pretty low until you get into the groove.
I’m shooting in manual mode here as the lighting wasn’t changing and I wanted to keep at 1/100th and have my aperture at f/13 so I had enough depth of field to get the car sharp and when panning you don’t need to worry about knocking the background out of focus as it’s blurred by the camera motion.