Today on Green Car Reports, the Tennessee-built 2013 Nissan Leaf has less U.S. content than you might think, VW may fit a Ducati motorcycle engine to its highest-efficiency car, California governor Jerry Brown celebrates this past weekend's National Plug-In Day, and IIHS unveils another set of safety ratings. All this and more on Green Car Reports.

The 2013 Nissan Leaf is built in Smyrna, Tennessee--so why is only 15 percent of the electric car made in North America?

Volkswagen is planning a Ducati-powered 'Sport' version of its XL1 ultra-efficient two-seat coupe, though we still won't be able to buy either one here in the U.S.

Ever wondered what a day in the life of a DC fast-charging station for electric cars is like? We have the video.

The 2014 Chevy Cruze can now be powered not only by gasoline and diesel fuel but also by natural gas.

California governor Jerry Brown (aka 'Governor Moonbeam,' if you're a Doonesbury fan) signed six electric-car bills into law to celebrate Sunday's National Plug-In Day.

The new head of the U.S. Department of Transportation, Anthony Foxx, toured the three Detroit automakers and drove a 2014 Ford Fusion Energi plug-in hybrid sedan.

The Insurance Institute for Highway Safety (IIHS) tested 74 new vehicles for frontal crash-protection safety systems, and released its first ratings for those systems.

Finally, do you know when your tires need to be replaced? Here's how.

_______________________________________________

Follow GreenCarReports on Facebook, Twitter, and Google+.