The achingly beautiful Alfa 4C seen at the Geneva show is to spearhead Alfa Romeo's U.S. relaunch in 2012.Yeah, you're having flashbacks. "The achingly beautiful Alfa 8C is to spearhead Alfa's U.S. relaunch in 2009." Fiat CEO Sergio Marchionne first announced in 2006 Alfa's return to the U.S. via Maserati dealerships, and that was supposed to happen by late 2007. Alfa has excuses for not making it back then, and by pausing while parent Fiat Auto cemented its relationship with Chrysler, Alfa now has access to a solid distribution system.Where the 8C was front-engined and a bit retro, the 4C is a defiantly modern mid-engine car. The Geneva concept car is what the real thing will look like. The concept has a carbon-fiber body, sitting on a carbon tub by race car maker Dallara. For cost reasons, the production car might have to switch to some metal panelwork-it depends on sales predictions, which determine how much to invest in tooling for metal.