Rolls-Royce Phantom Drophead Coupe (2007 - 2012) practicality

Although tests have proven that bigger isn't always better when it comes to safety, the Rolls is equipped with a double front bulkhead to provide occupants with better crash protection although there are no Euro NCAP results to back this up. Roll-over protection is always an issue with convertibles, particularly ones with soft rather than hard tops, such as the Rolls.

But a pair of roll hoops hidden in the rear headrests pop up to prevent passengers being crushed if the car flips over. Front and side airbags and a stability system are also standard.

Any car that's nearly six metres long but which is beaten hollow for boot space by a Honda Jazz is never going to top a list of practical motors. The bootlid has an unusual design, the top opening first followed by the back section which folds down to create a seat for two. And if it wasn't for the standard parking sensors you might need to station someone there permanently to help park it.

Even just threading your way through urban streets or country lanes demands some concentration. A big centre armrest provides useful cabin stowage and a small tray on the tunnel is perfect for mobile phones.