One from Sebring a few months ago. Noticed the 24/7 thing as I was looking at it later. Think it was around 5 pm on the hillside at the inside of turn 3.
Camera: Canon 7d set to AI servo mode/shutter priority/medium tracking
Lens: Canon 70-200 F4 L-Series (non-is)
iso: 100 F/22
Shutter: 1/80 sec