In the automotive world, coachbuilding is the age-old business -- recently making a resurgence among the extraordinarily wealthy, interestingly -- of taking established, off-the-shelf production models and turning them into totally customized, bespoke works of art. Commissioning a coachbuilt car is one of the most excessive displays of materialism known to modern man, but at the end of the process, at least you've got a functional keepsake and an heirloom that can be kept in the family for generations. Cellphones, though -- let's just say they don't have the same staying power that an exotic car has, which makes luxury manufacturer Mobadio's new Grand 350PRL a tough sell. The