The Cadillac Provoq Concept
"The Cadillac Provoq fuel cell concept is the latest example of GM’s groundbreaking E-Flex propulsion system, combining the new fifth-generation fuel cell system and a lithium-ion battery to produce an electrically driven vehicle that uses no petroleum and has no emission other than water. The concept’s fifth generation fuel cell technology is half the size of its predecessor, yet it has been developed to produce more power and performance." - Official Cadillac Press Release