Which Amtrak station is closest to San Francisco Airport?

I need to take Amtrak to get to the SFO, and was wondering which station should I get off (don't want to drive to SFO and park my care there for a month). And is there a Bart station near that Amtrak station? Thanks.
Update: Thanks for the replies. I know the Amtrak does not directly go to SFO. But I live 2 hours away from the bay area and have to take the amtrak to get to a bart station first before getting to the SFO. That's why I ask which amtrak station I should get off and then get onto the Bart.
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