Very difficult to positively identify the driver, but after watching several times on YouTube in full screen mode it looks to me like it could very well be Billy Johnson. He does a lot of this type of thing for Ford and I know for a fact that he's been at Sebring this week driving the Competition GT for photo shoots and for a Michelin Tire video.
Not saying it's 100% Billy...just that he looks closest to who I could see driving...in my opinion.
Welcome and thanks for the information.