ORIGINAL: jason
Its faaaaaaar too big
I don't know the precise dimensions of the Panamera, but if it's anywhere along the same lines of the (post-2006 model) Jaguar XKR, then it "won't do" multi-storey car parks.
Ok, so I accept the fact that very few owners of such cars (my boyfriend included with his XKR) wouldn't take them within a mile of a multi-storey car park, but even a normal outdoor car park with fairly generous-sized spaces, still aren't quite big enough.
Since the Panamera has been designed and marketed as a 'family orientated' Porsche, a family might at least expect the car to fit the car into a normal parking space...or more likely two!
Similar with the Cayenne. Granted, it's a 4x4, they're supposed to be big and wide - just what you need for off-roading - but since most are only used as Chelsea tractors, they're often what's holding all the traffic up on a narrow urban road.
EDIT: I should mention of course that I do like both the Panamera and Cayenne (but neither of them in white, ugghhh!), but I just wouldn't want to have to hunt down a big enough parking space for either of them. It's rather ironic that as our roads are becoming increasingly congested, we are trying to fill them with even bigger vehicles!