The official car of the Obama administration.

(Fox News) — In August, and for the second month in a row, the Chevy Cruze was the best selling compact car in America, with 21,807 cars sold.

The Chevy Volt? Not so much. Only 302 of the plug-in hybrids were delivered to customers, up from 125 in July.

So, is the extended range electric car of the future already out of juice? Not quite. At least not yet.

Sales of the four-seat hatchback were hampered by a July shutdown of the Hamtramck, Michigan assembly line where it is built. The closure needed in order to retool the plant to increase production for the 2012 model year.

As a result, supplies at dealerships — where Volts reportedly sit on the lot for less than 10 days, about as quick as a car can be processed and turned around for a customer — have been tighter than usual.

Of the 2,395 cars that were produced in August, a GM spokesman tells FoxNews.com that a third are in transit and another 700 or so earmarked for dealers for use as demos as new markets for the car are added across the country. So, even with production up to steam, the supply chain isn’t quite at full speed