Took an old student out for a couple laps since their car was down all day. I usually, save my laps til the end when the track is empty, and wasn't expecting to see what was coming up behind me in my mirror. The Rolex 24 winning Caddiliac DPI in 2017. The guy driving seemed like he was out cruising but it was a bit shocking to be passed by one on track. 

These were also my fastest laps in the Cayman at Sebring, running a 2.29.72, with a lot left on the table!