Porsche and Audi power a rise in revenue for car giant Volkswagen April 29, 2014 PORSCHE and Audi sales have lifted quarterly earnings for their parent company Volkswagen as car buying across Europe strengthens, the German firm said yesterday. More than 38,000 motorists drove away a new Porsche in the first three months of the year, or 4.5 per cent more than the same period last year. Porsche’s revenues rose [...]