Honestly, tell them to take the $7000 instead and get a Kia Niro. An EV is much easier to negotiate than trying to ‘gas up’ these hydrogen car. And this car is between $39-45k -11k instead of 60k - 20k.
There are 2 brokers here @Omegaautogroup and @EZAutoGroup who should be able to get you a good price for a small fee.
See the article I shared 8 posts up. The hydrogen station in the east bay was down 3-4 months in the summer, and I usually see long lines waiting to refill, or the station being closed. You will want to research long-term availability, especially when you are restricted on each fill amount.