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Production Porsche 918 Spyder – first photo from Pebble Beach

The Porsche 918 Spyder arrives at Pebble Beach The Porsche 918 Spyder has been on its way for quite some time, and we’ve seen it in umpteen guises from 918 Concept to 918 in disguise to 918 in Martini colours. And now we get the real deal – the production version of the 918 Spyder. But rather than a fanfare and a gazillion photos, Porsche has simply posted a single photo on Twitter to announce that the production 918 is at Montery Motor Week.

Enjoy the Show: Download Detroit 2009 tour now

It's not too late to visit the Detroit auto show, which runs through Sunday, Jan. 25. If you're going in person, don't forget to download the AutoWeek editors' audio tour of the show for your mobile device.

Vintage photos show Ford Mustang I and the elusive XD Cobra

It's hardly surprising that our readers want to share their memories of the Ford Mustang -- 50 years is a long time for an automotive nameplate to endure, and the model's upcoming 50th anniversary is as good excuse as any to look back on the experiences that have made the car an enthusiast hit. Take William Drew, who had a close encounter with pony car history when he saw the Mustang I concept, plus a rare Ghia-bodied Shelby Cobra concept, at an auto dealer in Dallas in 1970. His slides (taken with a Yashica camera, he notes) show the unusual cars in the nice, bright colors of Kodachrome.