I did. The range advertised is about the same as my wife gets from her standard pedelec, and short refuelling is only interesting if the infrastructure exists to do it. Which it seems it won’t, even in Germany, until the next decade. Seems slightly back-to-front to me. The other advantage they claim is ‘better carbon balance’ than conventional pedelecs, which seems bizarre, given that most hydrogen is produced by electrolysis, and the process overall is no more efficient.
OK, not having LI batteries around is probably good, but I really can’t see this as a major contribution, unless all transport goes the hydrogen route.