A pair of Audi RS performance cars have been caught testing and show what the German brand has planned for these ultimate examples of the TT and A5. The TT-RS was snapped in production ready form and shows off some serious design tweaks including two gaping intakes flanking the already gaping corporate Audi grille, chunky fender flares at all four corners and a pair of large oval exhaust tips embedded in the rear bumper. Powering the TT-RS is expected to be a twin-turbo 2.5L five-cylinder engine producing between 350 and 390 horsepower, which will easily make it the fastest production TT ever.

We know when it happened, we just don't know why it happened. Autoblog reader Joshua Silverman sent in some cellphone pictures of a Panamera he drove by in Denver, Colorado. And all of a sudden -- like the Grinch's heart growing three sizes -- we liked it. Or at least, we got it.

The Saab 9-4X has been caught in these new spy shots without the Keith Haring tape job it was wearing the last time we saw it. Features like the converging window lines on the side, the rear lights, and the Saab grille, give away its lineage. From the side, especially from the A-pillar back, you could be forgiven for confusing the Saab with a lot of other CUVs, while lines that are quite distinctive on the smaller 9-3 and 9-5 look to have been stretched into rather bland expanses on the 9-4X. It's still early, so we look forward to seeing the fully Saab-ified retail version. If Saab's managing director is to be believed, what won't be bland is one of the engine choices: a diesel with 250 hp and 406 lb-ft. That's the kind of quirky we can get behind.

If you're Mercedes-Benz, then what you have here is a failure to keep your photo shoots under wraps. First Autobild came out with bare naked shots of the 2009 E-Class, and now German magazine Auto Zeitung has more shots of the car getting some fresh air.

With a minimal front end and a profile that rises seemingly without arc to a chunky back end, the car is reminiscent of a stretched Alfa Romeo Milano. We aren't sure how big these wheels are, but the car's increased upright stance makes them look exceptionally small. As usual with the launch of revolutionary E-Class designs, the car could take some time to get used to, but by the time E-Classes are clogging roads worldwide they will look perfectly natural.

The coming CLS appears to offer more of the same: the current CLS is based on the E-Class platform; the next one is expected to be built atop S-Class underpinnings. Other than bigger body with a wider track, and bolder styling to harmonize with Mercedes' current design language, not much is expected to change.

That is usually the case with iconic cars. Having invented the category of the four-door-car with a more coupe-like silhouette, Mercedes could be waiting to see what its rivals -- from Aston Martin to VW -- will bring to the segment before it makes a revolutionary move.

The Cayman has two events to get ready for: the Cayman S Sport, and a facelift. A blacked-out Cayman with larger wheel arches and bolt-on fender flares was spotted recently, and it could be a tester for either car. With the rumored suspension tweaks for the Cayman S Sport, this could be making room for a serious set of rubber to take advantage of, not to mention 303 hp. Or perhaps the next Cayman will get some bigger shoes... and that wouldn't be such a bad thing either.

We've been patiently waiting for a successor to the Ferrari Enzo for some time now, and here's evidence that development of the next supercar from Maranello is underway. Codenamed FX70, the mule is housed in the shell of an F430 Scuderia, though there are a number of clues that what you're looking at is something very special. Take for instance the wheels, which are grossly oversized for the Scuderia. The track is also much wider and out back there's a large center-mounted exhaust. Next Autos reports that Ferrari is working on two separate engine options for the FX70 including a 700-hp twin-turbo V8 and a twin-turbo V12 that could reach 800 hp. Rumors suggest that Ferrari may go with the TT V8 in deference to the climate concerns of our time, though we hardly expect Ferrari to mix in too much green with that Rosso Corsa Red.