Volkswagen AG is preparing to integrate flat batteries into future cars as the German manufacturer plans to boost its electric-vehicle lineup following its emissions manipulation scandal. The company expects demand to increase rapidly as the range of battery-powered vehicles is growing and costs are declining substantially, Volkswagen brand chief Herbert Diess said according to a transcript of an interview with the internal staff newspaper Insight that was obtained by Bloomberg and will be sent to workers on Monday. "We are developing a special vehicle architecture that foresees the ...