Volkswagen has revealed a diesel hybrid concept that can deliver well in excess of 300mpg. The new car, called the XL1, is the third concept built by the company to be capable of traveling 100km (62 miles) on a single liter of fuel. The first two vehicles, introduced in 2002 and 2009, used tandem seating, but the XL1 achieves the goal (or at 0.9l/100km, surpasses it) while looking remarkably conventional.STUTTGART, Germany — Porsche is poised to revive the flat-4 engine for its new baby roadster, as well as existing models such as the Boxster, the Cayman and the 911.
Britain’s Autocar magazine quoted Wolfgang Durheimer, who recently quit his post as head of Porsche R&D to become Bentley CEO, as saying Porsche has “a four-cylinder boxer engine under development” and that it “can be applied” to the Boxster, the Cayman and the 911.
According to Autocar, Porsche’s four-cylinder boxer engine will displace 2.5 liters and, in turbocharged form, will deliver 360 horsepower.
The engine is earmarked initially for  … More
Porsche’s development boss says that the Detroit auto show-stopping 918 RSR hybrid racecar will be developed alongside the open-topped Spyder road project, instead of replacing the 2010 Geneva concept.