This filming was carried out by a highly experienced BNUCs qualified pilot after due consideration of the risk and consultation, agreement and co-operation of the MSA Steward, Race Officials and talent (in this case the drivers). The flight plan allowed for flying a rectangular pattern on the infield of the race circuit, at high speed using the "course lock" setting, enabling the pilot to not only maintain an accurate heading without drifting over the track itself, but to also make dramatic heading changes that follows the karts on track (Pilot flies left to right, backwards down to the final turn, right to left following start/finish straight, then forward up main straight). Carried out by Pilot, Camera Operator and four observers. Due to the high speed nature of the flight, skill required by the pilot to maintain control and follow the karts without incursion over the track, and highly skilled operation of the camera gimbal to follow the karts and keep them within the frame, this has to be one of the most amazing uses of this aircraft. Drifting over a few fields or a valley to get some nice panoramic images this is not! This is high speed, high skill, maximum concentration stuff. Pilot and Observers linked by radio. ... https://www.youtube.com/watch?v=7ui4fcTfpGM