Found an old track day video on my GoPro when I was trying to figure out some corrupt file issues. I have ran with a few M3s on the track and a turbo Slingshot is a good match. Running up to around 130mph on the long straight away.
If anyone around AZ is interested in track days, I will be attending several in the fall and winter. I have worked to get Slingshots approved and it would be great to see more at the track. PM me for more info.