Fiat is using "TwitBid" to launch the 500 America, a limited edition run of 500 cars with U.S. inspired detailing. TwitBid is an online promotion through which it will be possible to win the first example (which will have a badge on the B-pillar bearing the serial number 1/500 as well as the winner's nickname) starting from a bid price of 1 euro. Contestants will have to register on Twitter and then on a dedicated microsite starting from tomorrow. The bidding will close on March 15. At the end of the initiative, whoever has placed the highest offer will win this trimmed-up 500 version which features door mirror covers with stars and stripes, some interior detailing, waistline stickers and 16" alloy wheels.  Visitors to the Fiat stand at the upcoming 82nd Geneva Motor Show will be able to see the bids in real time on a screen next to the 500 America that will be on show. Hagakure is author of the concept and initiative, while Leo Burnett - ARC Worldwide has handled the creativity and production of the site. The 500 America will come with the 69 CV 1.2 8v Euro 5 engine.