NASHVILLE, TN - JUNE 07: Singers Sarah Darling and Katie Armiger test drive the all new 100% electric Nissan LEAF at the Loews Vanderbilt Hotel on June 7, 2011 in Nashville, Tennessee. (Photo by ... more 
NASHVILLE, TN - JUNE 07: Singers Sarah Darling and Katie Armiger test drive the all new 100% electric Nissan LEAF at the Loews Vanderbilt Hotel on June 7, 2011 in Nashville, Tennessee. (Photo by Rick Diamond/Getty Images for NPG) less 
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Getty Images | Photo By Rick Diamond / Getty Images for NPG
Tue, Jun 7, 2011 3:14 PM EDT