Penske Truck Leasing said Monday it has ordered 750 units of Ford Motor Co.’s E-Transit battery-electric van. The order marks anther large customer purchase of the all-electric cargo van after Ford said ahead of the vehicle’s February launch that retail giant Walmart Inc. had ordered 1,100 units. Penske, which piloted the E-Transit late last year, said it expects to take delivery of the first “several” vehicles in the order within the next several weeks. The company’s first E-Transits will be available in southern California, with other locations in the U.S. slated to be phased in later this y…