(Bloomberg) -- Porsche AG may develop a supercar positioned higher than the 911 GT2 RS to broaden its line-up and sustain growth as orders cool from record deliveries last year.
The car could be combined with additional variants of the Cayman and Boxster as well as extended-wheelbase and convertible versions of the Panamera four-door coupe, Bernhard Maier, Porsche's sales chief, said in an interview.
It would aim to fill the gap between the 237,600-euro ($338,500) GT2 RS, the top end of the 911 line, and the 768,000-euro 918 Spyder hybrid.
"We're currently examining what options can be derived from this" hole in the product range, Maier said at the manufacturer's headquarters in Stuttgart, Germany. "There already are initial ideas that look very promising on paper."
Porsche SE, which jointly owns the sports-car maker with Volkswagen AG, plans to merge with the Wolfsburg, Germany-based manufacturer.
The combination will bolster VW's luxury line that already includes Audi, Lamborghini, Bentley and Bugatti as it aims to topple Toyota Motor Corp. and General Motors Co. to be the world's largest carmaker by 2018.
Hike in Cayenne output
Porsche will also boost production of the Cayenne sport-utility vehicle next year after surging deliveries of the sports-car maker's best-selling model spurred a 37 percent sales gain in the first half.
Cayenne output will increase by 10 percent to 20 percent starting in 2012, Maier said.
Demand for the vehicle, which starts at $48,200, caused delivery times to peak to as high as 12 months in markets such as China. Porsche wants waiting time to be no longer than six months.
"We're now looking into ways we can expand production capacity to be able to serve our customers more quickly," Maier said. "First-half data show that we're growing almost consistently in all world markets and across all model lines."
Backed by VW's resources, Porsche aims to double sales to about 200,000 vehicles by 2018 by adding a compact SUV and increasing sales in emerging markets.
Porsche should boost deliveries to more than 100,000 this year from 97,000 in 2010, Maier said. Porsche sales increased 29 percent to 10,670 models last month, leading to sales of 60,650 units through June, Maier said.
Six-month orders rose 26 percent to 65,660. There was a 12 percent decline in June orders to 10,450, because year-earlier bookings were inflated by a revamped version of the Cayenne.
The carmaker plans to release complete first-half sales data on July 12, according to company spokesman Dirk Erat.
Panamera sales may rise to more than 28,000 units this year, compared with more than 20,000 in the first year after the model came to market in September 2009, Maier said.
Overall sales growth will slow in the coming months after record deliveries in the second half of 2010. The forthcoming overhaul of the 911 may also hamper sales, he said.
Prospects in the U.S., the company's biggest market, are "very positive," said Maier, a former executive at BMW AG who took charge of Porsche's sales operations in April 2010.
Its U.S. sales rose 42 percent, to 15,542 vehicles through the first six months of 2011, after a 19 percent June gain.
"The U.S. market is still characterized by a degree of volatility that shouldn't be underestimated," Maier said in the July 6 interview. "In the coming years, growth is conceivable in the U.S. to help return to levels seen before the crisis."