Clean Air Day Celebrations

Thursday marks Clean Air Day, and what better way to commemorate it than by celebrating innovation that scrubs the air we breathe? This Clean Air Day, Hyppo shines a spotlight on the Toyota Mirai, a zero-emission car that doesn’t just avoid producing polluting emissions; it actively purifies the air thanks to its sophisticated filtration system.

Toyota Motor Corporation’s second-generation Mirai isn’t just about driving without carbon dioxide….it’s designed to deliver “minus emissions.” As the fuel cell draws in oxygen, an electrostatic dust filter captures ultra-fine particles (PM2.5), and a charcoal-mediated chemical filter neutralizes harmful pollutants like sulphur dioxide and NOₓ before releasing clean air back into the environment.

Importantly, every full hydrogen tank (roughly 5.6 kg across three tanks) filters a tremendous volume of air. Toyota engineers estimate each tank processes around 400,000 litres of ambient air, spotlighting Mirai’s real-world impact during daily drives.

Hyppo Hydrogen Solutions’s mission aligns seamlessly with Toyota’s vision: switching to hydrogen-powered fleets isn’t just about avoiding carbon, it’s about healing public health. By showcasing the Mirai on Clean Air Day, Hyppo aims to inspire fleet managers and policymakers to adopt hydrogen technology….not just for transport, but for urban wellbeing.

Wales’s historic ties to hydrogen date back to William Grove—who, in 1839, pioneered the gas electrode fuel cell in his ‘gas voltaic battery.’ His early work laid the foundation for today’s hydrogen fuel cells. Clean Air Day is a fitting tribute to Grove’s legacy, celebrating how far hydrogen technology has come


On this Clean Air Day, Hyppo celebrates how the Toyota Mirai doesn’t just transport people—it cleans the air we share. Combined with Toyota’s hydrogen ecosystem, partnerships with CaetanoBus, and H2Bay’s Welsh infrastructure, we’re entering an era where hydrogen mobility is a pathway to cleaner cities and healthier futures.
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