Altamont Commuter Express was, at one point, the longest running Wi-Fi-on-rails production system: They ran into snags in providing a significant upgrade for their service, however, which has led to a year-long absence of service. The new satellite-based offering should be rolled out soon, with a price to be set. The University of Phoenix has had a long partnership with ACE, previously fully subsidizing the service, and offering classes on board. The subsidy amount remains to be determined with the new offering.
ACE runs from San Jose through Fremont (via a train station my dad used to own, no kidding), and then east through the foothills to Livermore, through Tracy, and up north to Stockton. When I grew up in the Bay Area, Livermore was practically ultima thule, not a suburb.