Now here's a challenge for avid autocar.co.uk users.
Next week, we're launching a video test that includes a section where the car under scrutiny chases the Ford Focus RS around the Millbrook proving ground.
As part of the build-up to the video's launch we've been running a short trailer of the film, and then asked readers to guess what the car doing the chasing is.
However, if you've already watched that video and are still bamboozled, there's now a longer version of the film online, giving you a better opportunity to guess what the car is.
If you're still stuck, don't worry; the full video road test will be online at autocar.co.uk on Wednesday, June 17.