<http://schema.org/keywords>
"Electric drive,Technology/R&amp;D,Siemens,Hyundai,Lotus,Audi,Jaguar,Ford,Proton,Mercedes,Ballard"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.just-auto.com/analysis/electric-vehicle-range-extenders-rival-approaches_id112742.aspx>