Vegas to DC in July 2010. DC to Vegas in Dec. 2010. Loaded to the gills on the inside and a Thule Terrapin hitch mounted clamshell thingy out back. Avg. 20 mpg, no problems other than the thermostat deciding to go bad partway home from DC.

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Kirk
Las Vegas
2016 X5 40e Mineral White/Black Dakota Leather, ZLL, ZCW, ZDA, ZDB, ZPP, multi contour seats, rear side window shades, HK stereo
2011 E90M3, 6-speed manual