The BMW 7 Series I’m currently testing shows how it should be done: it’s a big car and use of digital cameras really helps you to deal with its bulk.

I’m sure it was BMW that first offered the plan-perspective parking aid which it now calls Surround View. It’s a composite image, delivered as if you were hovering about 30 feet above the roof of the car, in order that you know you’ve parked perfectly in the centre of the bay you’re aiming at without getting out to check.