Which German uber-saloon is fastest: The BMW M5, Mercedes-AMG E63S or rather complicatedly-named Porsche Panamera Turbo S E-Hybrid?
All have 4.0-litre V8 engines with two turbochargers attached, and all are big executive cars, and all have four-wheel drive, but beyond that they go about things in slightly different ways, as we'll explain.
But only one can be quickest through 60mph, 100mph, a standing 1/4 mile and a standing 1/2 mile. Question is, which one?
We strap our timing gear to them, and run them head-to-head in an old-school shootout.