i have videos take with gopro already posted on the forum. check them out. in those videos the camera is located right between the two seats.
Not to mention 2:26 on VIR full course with a stock car is definitely not a slow pace. (had about 40 laps in 2 days between 2:26-2:30)
Edit: I tried to put iphone in the center of the car the gps for the HTL didnt work that well.