The idea revolves around a challenge for four teams of two from around the US who have been picked to race Dallas at Cowboys Stadium - with one team each leaving from New York, Tampa, Chicago and Los Angeles. Mercedes' ultimate goal is to achieve a combined 7087730 followers through the challenge.
Each team needs to collect something Mercedes is calling "tweet fuel", which will help push the team a little bit further in their respective vehicles, with NY behind the wheel of a 2011 Mercedes-Benz CL550 4Matic, Tampa driving a 2011 E550 Cabriolet, Chicago getting the keys to a 2011 GL350 BlueTec and LA will use a 2011 S400 Hybrid.
If they "win," each member will receive a 2012 Mercedes-Benz C-Class Coupe.
Via - Mercedes Benz