Toyota Motor Corp. will supply temporary hydrogen stations to California dealerships selling its Mirai fuel-cell sedan as some buyers put off taking delivery of their cars until refueling infrastructure is set up.

Mobile hydrogen trailers from Air Products & Chemicals Inc. will serve as a stopgap until the state opens more stations, Doug Coleman, a Toyota marketing manager for fuel cell vehicles, said in an interview.

The collaboration with Air Products builds on Toyota's efforts to support California's nascent hydrogen fueling infrastructure, after it provided funding for closely-held startup FirstElement Fuel last year. Only four stations were open for retail use as of last month in the state, the lone place in the U.S. where Toyota sells the car that emits only water.