Yes, indeed it is. The 5.4 L Triton V8 in my Expedition (and Ford’s F-150 as well) uses a 24-valve SOHC setup. Though GM must have used some special adaptive mechanism to achieve the desired effect, I do see why a Pushrod setup with VVT does seem weird. Still even with VVT a Pushrod engine will not be quite as efficient as a OHC engine nor will it give the same performance.

Also I forgot to ask about the Hyundai you saw, did you take any pics of it, besides video? I saw a Prototype being tested on I-95 a few years ago. It looked like a Dodge, I think it may have been the now current model Dodge Magnum. The front, rear, and sides of it were covered with black leather cladding like the Hyundai you saw.