Feb. 11, 2018

A start-up West Coast company “Cabin” operates an overnight Custom Coach service between San Francisco and Los Angeles. Cabin began in 2016 with test runs and operates three motorcoaches while providing specially designed 24 pax max./sleeper  berth equipped/ground transportation service between the main California city pair LA-SF. Their fares average $85 to $115 and include refreshments and host service.

More here in this early Feb. 2018 USA Today article:

Cabin Coaches: California overnight bus service