This year the national runoffs take to the high banks of Daytona International Speedway for the first time since 1969. Info about all the goings on here
http://www.scca.com/runoffs
Races start Friday and are supposed to be streamed live on
http://speedcasttv.com/
I was at the track for a couple of the qualifying days and took some video of various classes
https://www.youtube.com/watch?v=H2zYfViGBNk
and this one showing the Spec Miata class doing some pretty serious bump drafting up on the high banks
https://www.youtube.com/watch?v=qoD9VQhfeAw