Can you really tell how good a car is without driving it? My own view is that travelling in a car without taking the wheel doesn't normally allow you to make much of an assessment at all but I found a partial exception to the rule.
On the eve of the Paris Motor Show, I had the chance to join a small select group of journalists to experience the soon-to-be-launched fourth-generation Range Rover as a passenger.
One of the big changes to the new Range Rover is the adoption of an advanced aluminium body structure that addresses one of the few significant points of criticism of the old car - its weight. The fourth-generation model is 420kg lighter than its predecessor, and the impact of that change can immediately be felt when the car is under way.
The old model could wallow a bit but the new one has much better body control and also picks up speed under acceleration with an ease that was absent before. The previous car was fast, but there was always the feeling it was having to use brute force to punch a big square SUV-shaped hole through the air and overcome quite a bit of inertia before it really got into its stride. This lighter, lower and aerodynamically slipperier vehicle is different.