The Hyundai Nexo, a hydrogen fuel cell SUV first unveiled at CES 2018, has earned a top safety award from the Insurance Institute for Highway Safety.

The award, announced Thursday, marks two firsts. The Nexo is the first fuel cell vehicle to earn IIHS’s top safety award. Then again, it’s also the first fuel cell vehicle IIHS has ever tested.

The top safety pick+ award is for 2019 Hyundai Nexo vehicles built after June 2019, when the automaker adjusted the headlights to provide better visibility through curves. Any Nexo vehicles produced prior to June still get high marks, but fall short of the top award. Instead, they qualify for IIHS’ second-tier top safety award. The Nexo joins other 2019 Hyundai and Kia vehicles to earn top safety pick+ awards, including the Hyundai Elantra, Kia Niro hybrid and Kia Soul.

The market for the Nexo is small right now. Within the U.S., the new vehicle, which has a base price of $58,300, is only sold in California. Deliveries of the vehicle to California residents began in December 2018. The vehicle has been available to customers in Korea since early 2018.

Normally, such a limited vehicle wouldn’t be included in IIHS’s routine test schedule, the organization said. Hyundai nominated the vehicle for testing. IIHS says it ended up benefiting too because it gave the organization an early opportunity to evaluate a hydrogen fuel cell vehicle.

Earning this top safety pick+ award isn’t easy. A vehicle has to earn good ratings in the driver-side small overlap front, passenger-side small overlap front, moderate overlap front, side, roof strength and head restraint tests. It also needs an advanced or superior rating for front crash prevention and a good headlight rating.

The Nexo, a midsize luxury SUV, has good ratings in all six crashworthiness tests, IIHS said. The Nexo’s standard front crash prevention system earned a superior rating. The vehicle avoided collisions in 12 mph and 25 mph track tests and has a forward collision warning system that meets National Highway Traffic Safety Administration criteria, according to IIHS.

The Nexo could someday become more common, and even used in fleets. Self-driving vehicle startup Aurora has been working with Hyundai and Kia for the last year to integrate its “Driver” into Hyundai’s Nexo.