Practical Cycle bike shop opened Thursday in Old Sacramento. On Friday, Tim Castleman and his son, Cassidy, were busy unloading a shipment of at least 35 Worksman bikes at the store at 114 J St. The grand opening will be held on April 22, Earth Day. But fans of Worksmans and electric bikes already have started stopping by to talk about their favorite rides, Cassidy said. The shop has bikes made in the United States for sale and for rent, as well as accessories. They include Pedego electric bikes and Worksman models such as cruisers and two-person side-by-side trikes. The Castlemans said they expect bike rentals to pick up as word gets out that Old Sacramento once again has a rental sho

Tim Castleman had a big response to the Sept. 11 attacks on the United States. He felt so sad, disappointed and angry that he changed his life. He started developing a hemp-based biofuel system and fought for legalization of hemp in Arizona to help end U.S. dependence on fossil fuels. He began a national "Drive 55" campaign to lower Americans' gas consumption and reduce carbon emissions — an effort turned into a documentary. And he organized two "Peace Trains" to Washington, D.C., to promote rail travel. "My interest in biofuels led me to understand the real problem isn't that we need another source of fuel. We need another source of energy," said Castleman, 51. "The real problem is we