In this work, we present recent progress in our work to develop new sensors and sensing technology for future hydrogen powered fuel cell vehicles. The first device is an electrochemical mixed potential sensor based on an indium-tin oxide/YSZ/Pt configuration prototype fabricated using commercial ceramic sensor manufacturing methods. This sensor has been designed to detect hydrogen in air and may serve in safety systems for vehicles or as a component of hydrogen infrastructure. The second device relies on a swept frequency acoustic method to non-invasively determine the state of charge of a hydride material contained within a sealed storage system.