Sure, we could have display, keyboard and power supply available at home, the office, in a hotel room, whatever.

FORBES: Linux on Smartphones: Could it Replace the Laptop?

If these USB displays provide as high a viewing experience as HDMI cable displays and supply the display power as well it may be that USB will eventually displace HDMI due to the higher production volumes and consequently lower costs for USB cables.

FORBES: Making Connections at the 2012 CES