The LA Times did a poll and story on the opposition.
But as D.P. points out on the California High Speed Rail blog, two things:
1.Old people oppose rail in the poll, but young people favor rail.
2.Old people vote in far greater percentages than their numbers, while young people do not vote.
Here's the question: when today's boomers are in their 80s, and either experiencing a bloodbath on the highways as their driving ability plummets, OR not even able or allowed to drive at all, will these boomers regret not supporting passenger rail that would both extend their lifespan and increase the quality of their life? Old people feel free to respond!