If you're going to Cabazon or to Palm Springs, Amtrak has Thruway service (train/bus) from downtown Los Angeles Union Station to Cabazon and drops you off right at Morongo Casino. The bus continues to downtown Palm Springs or Palm Springs airport.
As of February 2015, one way was only $17. Cheaper than gas!
Cheaper than gas .... Where from?
does amtrak make stops on way to morongo casino