The 2011 Chevy Volt's Leaf Button manages it's power and helps the driver to increase fuel efficiency.<br /><br /><br /><img src="http://ll.broadbandsports.com/images/39191_thumb.jpg" alt="2011 Chevy Volt - Leaf Button | Electric Car Efficiency" title="2011 Chevy Volt - Leaf Button | Electric Car Efficiency" width="150" height="90" alt="2011 Chevy Volt - Leaf Button | Electric Car Efficiency"/>
