<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/54cfcea60ec5d_-_volt-slides-1010-de-59212377.jpg>
<http://www.popularmechanics.com/cars/hybrid-electric/a6179/chevy-volt-hybrid-drive-system/>