Posted on November 21, 2013August 7, 2018 by karlaTZ @ TMS UPDATE: Volkswagen XL-1 This red beauty is a plug-in diesel hybrid with fuel economy estimated at 261 mpg. Alongside this two-person ride, Volkswagen presented the Twin Up! Concept, adopting the XL-1 powertrain at the 2013 Tokyo Motor Show the twin up. Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Like this:Like Loading... Related