General Motors reported Chevy Volt sales of 1,529 for the month of December. The still unimpressive number is an improvement over previous months, but the gains were mostly driven by fleet sales. According to GM, 992 of the Volts sold were to retail customers while 537 went to fleet purchasers. GM says the fleet sales were to corporate buyers and not to rental companies. The number of Volts sold to townships receiving federal grants remains unknown. The corporate sales claim makes sense as crony company, General Electric, starts to make good on its promise to buy thousands of Volts....