DETROIT — Just when you think Porsche had cobbled together every possible version of its 911 sports car, the iconic German automaker does it again.

Porsche used the 2015 Detroit Auto Show to unveil Monday the 911 Targa 4 GTS, as well as a full-crazy 570-horsepower Cayenne Turbo S SUV.

The 911 Targa 4 GTS lengthy name means it comes packed with a lot of gear.

"Targa" means it has a folding roof section (cloth-covered magnesium frame) that stows automatically behind the rear glass in a complicated and dramatic fashion.

The "4" says it's all-wheel-drive.

And the "GTS" means it comes packed with a host of performance-enhancing add-ons. These include bumping the 3.8-liter six-cylinder engine from 400 horsepower to 430 horsepower and adding unique 20-inch wheels, an active suspension, the Sport Chrono package (lowers 0-60 mph time to 4.1 seconds and adds a Sport Plus setting) and a sport-tuned exhaust.

Porsche says 13 percent of current 911 buyers are choosing the Targa model — half coupe, half convertible — and the number is growing each month. So it saw a chance to expand the menu.

This model will start at $133,795 and is scheduled to hit the U.S. market in late April.

On the SUV front, Porsche announced in Detroit that it had given its Cayenne Turbo S SUV a midlife update that adds more of everything.

Horsepower on the 4.8-liter, twin-turbocharged V-8 jumps from 550 to 570. Torque is now 590 pound-feet, a jump from 553 pound-feet.

A 0-60 mph run now takes a scant 3.8 seconds, nearly half a second faster than the earlier model.

Carbon ceramic brakes are standard, as is a suspension that actively mitigates body roll, 21-inch wheels, LED headlights, and a full leather interior with carbon fiber accents. Starting price is a cool $158,295 when it goes on sale in April.

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