Answer inside.

"The exhaust is crackling through the huge "top pipes" that are mere inches from our heads.

Yes, the exhaust pipes are on top of the car, not at the back. This sounds as cool as it looks and looks as cool as it sounds. However, Walliser's team had to devise a little detachable carbon-fiber wing which affixes to the top of the windshield header when the roof panels are removed, to direct enough air to prevent exhaust gases and hot air from making their way into the cabin. Oh, the problems that supercar engineers must solve."