Fast and noisy and very long races! Lots of Viper SRT action in the Tudor race, and in the FIA/WEC classes we have Aston Martins which have the most wonderful rumbly engine sounds as they go by. Both Astons and Vipers did really well too, winning their classes. Plenty of other juicy cars too; Ferraris and Porsches and BMWs and Toyotas and of course the amazing Audis which are whisper quiet. The Six Hours of the Circuit of the Americas race was run into the night, and visited by a torrential rainstorm which added plenty of interest to the proceedings.