In 2008 , in response to the Automotive X Prize sponsored by Progressive Insurance — a $ 10 million prize aimed rewarding the design and construction of a car capable of fuel efficiency at the 100 miles per gallon ( m.p.g. ) mark , while achieving " road-legal safety specifications " subscription — Joe Justice and team Wikispeed , composed of 44 members from 4 countries , used XM to achieve what '' Fortune '' magazine called the " seemingly impossible : " application of tools formerly largely devoted to software manufacturing , to the development of a functional automotive prototype in three months time . Even more remarkable than the 100 m.p.g. car was an impressive rate of acceleration : from 0 to 60 m.p.h. in less than 5 seconds . The success — finishing 10th in the mainstream class , and " outrunning more than one hundred other cars from well-funded companies and universities around the world " — led to an invitation to team Wikispeed to showcase their prototype at the Detroit auto show
Automotive X Prize
Automotive X Prize
EXtreme Manufacturing