Why it worked
The video likely performed well due to the extreme nature of the modification (a V8 swap in a BMW i8), which appeals to car enthusiasts. The visual spectacle of the modified car on the race track, combined with the implied power of the V8 engine, creates strong interest.
Summary
The video showcases a BMW i8 that has been modified with a V8 engine swap. It features close-ups of the engine and exterior, followed by shots of the car on a race track, including a fly-by and a lap around a corner.