It's been eight years since California voters approved funding for the nation's first real high-speed rail system.

It promised to whisk travelers from San Francisco to Los Angeles in under three hours compared to six hours or more by car.

Eight years later, construction is years behind schedule, and the project has been plagued by legal, financial and logistical delays.

The $68 billion project is back in the spotlight this week as Central Valley landowners argue in court that the state can't meet those promises made to voters.

The California High-Speed Rail Authority is also set to release its 2016 business plan this month.

Officials say they are considering extending the line north before it heads south. But opposition has grown in Southern California as the state studies potential rail routes.