TRAVERSE CITY, MI – General Motors Corp. now has a drivable version of its hydrogen fuel cell-powered Sequel concept car, according to the Associated Press. The Sequel, which looks like a shrunken minivan and has a range of 300 miles, will be shown to reporters next month in California. But production and sale of the Sequel is a long way off. “That’s rocket science when you get in that car,” said GM Chairman and Chief Executive Rick Wagoner, as quoted by the Associated Press. “This is the most sophisticated, technologically advanced product I think we’ve ever made in the history of GM.” Nearly all automakers are testing hydrogen-powered vehicles, with some in use by government workers. The testing has received support from a 5-year, $1.2 billion hydrogen initiative first announced by President Bush in his 2003 State of the Union address. Experts say the pollution-free technology could begin arriving in showrooms by 2020 or earlier.