We're at Road Atlanta to take in the 40th running of The Mitty – an annual festival of historic motorsport organised by HSR at the circuit perhaps most famous for the now iconic Petit Le Mans race, which has become the traditional swansong to the American sportscar racing season.
Qualifying action gets underway today, and we'll be bringing you all the action we can cram onto our website and social media feeds (look out for a few Facebook live streams from trackside later), but to begin with here is a selection of images from yesterday's warm-up test day.
It is a small snapshot of three of the classes that were out for some final fine-tuning, and includes Indy Lights single-seaters, Lola T70s, NASCAR, modern GTs and more. It shows just how incredible the mix of cars we'll bring you this weekend will be.
Photography by Ben Miles.