In a life changing twist of fate, John and Sherry Turk each had a major accident in the same year and became disabled. Rather than letting their disabilities diminish their lives, they quit their jobs and in 1999 opened “Wheelchairs Unlimited” so that they could help others who also had mobility issues. Unfortunately, the Turks had to close their two-person business in 2008 when Sherry was having health concerns. However, in 2009 the husband and wife team re-opened it, changed its name to Turk Enterprises and changed its focus from durable medical equipment to recreational travel mobility. The store is now a retail shop where the Turks sell and service motorized scooters, travel chairs,

The Sacramento Clean Tech Showcase keynote speaker Daniel Sperling is an internationally-renowned expert on transportation, energy and sustainability issues. In December he co-authored the book Two Billion Cars which projects that within 20 years the number of motor vehicles on the planet will double from its current total of one billion due primarily to growth in India and China. Sperling is a Professor of Engineering and Environmental Science & Policy at the University of California, Davis, and Founding Director of the university's Institute of Transportation Studies. He also serves on the California Air Resources Board, chairs the Future of Mobility Council of the Davos World Economic