UPDATE: Crist reponds below.

GOP U.S. Senate candidate and former House Speaker Marco Rubio doesn't flat out oppose SunRail but throws up caution (he has to  in order to remain consistent with overall criticism of stimulus) and takes a jab at Gov. Charlie Crist in a statement today.

"We should be wary of all the promises floating around Tallahassee about how this latest round of government spending will create lasting jobs and prosperity," Rubio said in a statement first provided to The Fine Print. "Rail projects have merit as transportation and infrastructure policy. But selling SunRail as a jobs issue, as Charlie Crist has chosen to do, is a stretch. If the nearly $800 billion Obama-Crist stimulus plan didn't create the jobs they promised, how can we believe a new train system is going to live up to its promises?

"In addition, I disagree with Governor Crist's claim that he doesn't care where the money comes from to pay for this project. I care a lot, because it's coming from borrowed and printed money that is ultimately coming from my children and their generation."

Crist spokeswoman Andrea Saul: "Talk is easy, Governor Crist and the Florida Legislature are focused on actually creating much needed jobs in central Florida. Despite Marco Rubio at one time voting in favor of and supporting the SunRail project for Central Florida, Governor Crist is pleased to be working with Rubio's former House and Senate colleagues in bringing this important project to fruition."