An apparatus, method, or system for providing specialized platforms and computing environments for vehiclesconveyances to coexist with end user devices is disclosed. The supply device supplies a scavenging gas, which is for scavenging the fuel cell, to the anode and the cathode. 5% and at most 12% of CaO, from 5 to 18% of SrO, from 0 to 13% of BaO, from 0.