Dell's massive laptop

The Dell XPS M2010 is the world's first 20-inch laptop. Sure, it might look great sitting on your desk, but how practical is it for everyday use? In order to find out, we captured a video as we laboured across the London Underground's largest interchange between Monument and Bank stations with this behemouth. As people are already elbowing for room on the Tube, what would our fellow London travellers think? Does the Dell pass the suitability test or does it weigh us down?