Wheelies: The Dismissal Edition - NYTimes.com Dany Bahar, the Group Lotus chief executive who sought to add six models to the product line of Lotus Cars, the struggling British sports-car manufacturer, has been fired from his post, according to a statement issued Thursday by Group Lotus. Mr. Bahar was suspended after an investigation began into his conduct in May. The findings of that investigation, which were not made public, prompted his dismissal, Lotus said Thursday. The group immediately announced the appointment of Aslam Farikullah, a senior executive for DRB-Hicom, the parent company of Group Lotus, to lead operations for the company. In a bid to broaden the appeal of Lotus, Mr. Bahar had orchestrated the debuts of six concept cars at the 2010 Paris motor show. Group Lotus The 2013 Chevrolet Volt is expected by General Motors to deliver 38 miles of range under electric power, up from 35 miles in the current version of the plug-in hybrid. G.M. said Thursday that changes in the chemistry of the Volt's batteries yielded the range gain. The company also expects the Volt to be certified by the E.P.A. at 98 m.p.g.e., an increase of 4 m.p.g.e. over the current car. Fisker announced Thursday that its first franchised dealership in the United States would open next month in Scottsdale, Ariz. The showroom will be operated by Penske Automotive Group, a subsidiary of the corporation run by Roger Penske, a motorsports team owner. The group, which owns and operates dealerships throughout the United States, relinquished control of Smart USA to Mercedes-Benz last year. Fisker Automotive On Wednesday, Lamborghini announced that earthquakes and aftershocks that struck the region of Emila Romagna, Italy, in May damaged supply lines for the hypercar Aventador. Production may be delayed as suppliers relocate and rebuild their facilities. The automaker said its headquarters in Sant'Agata Bolognese did not sustain damage and that production of the Gallardo, which was not dependent on the affected suppliers, was not hindered. Nissan said Wednesday its Easy-Fill Tire Alert system would be available as a standard or optional feature on all models it intended to sell in 2013. To prevent overinflation during filling, the system triggers the vehicle's horn when the tires are filled to their optimum pressure level. The horn honks more insistently, Nissan said, if inflation continues beyond the initial warning. Nissan Sebastian Vettel, the reigning champion in Formula One, will drive the course of the Grand Prix of America next week in New Jersey. The race is tentatively scheduled for the Sunday after the 2013 Montreal Grand Prix. The 2013 Formula One calendar has not been released. Vettel, an ambassador for the Infiniti brand, is expected to drive the Infiniti IPL-G coupe around the 3.2-mile street course, which goes from Weehawken to West New York and back.