Extreme H, in a strategic shift from its predecessor Extreme E, is introducing a new avenue for manufacturers to develop their own hydrogen fuel cells by allowing integration into the Pioneer 25 series' car. This move diverges from the single-make series concept to emphasize innovation and cost control. Mark Grain, the technical director of Extreme H, highlighted the logic behind this decision, focusing on leveraging existing off-the-shelf fuel cell technology to showcase and promote advancements in hydrogen fuel cells through racing. The collaboration with the FIA aims to set regulations that ensure cost containment and competitive racing by controlling the energy output of fuel cells. This approach mirrors fuel flow limits seen in other racing series like Formula 1. Noteworthy manufacturers such as Honda, BMW, Toyota, and Hyundai have already shown interest in participating, signaling a strong momentum towards hydrogen fuel cell adoption in motorsports. The emphasis remains on promoting technology and innovation while keeping costs manageable and competition fair.