Don't call it a car.  Nissan calls it a "mobile device."  The quirky looking car debuted on Monday's night's episode of Heroes on NBC. Nissan is advertising the Cube to younger drivers who want to customize and personalize their cars like a cellphone ring or a Facebook page.  It's a daring move in a bad economy.  The car goes on sale May 5th and starts at $13,990. 
Cars.com gives us a video review of the Cube above.
The NY Times has more on the marketing campaign.