JCB went to Bonneville and hit 406.320 with their hydrogen powered internal combustion engine streamliner, the fastest a hydrogen internal combustion engine powered vehicle has been driven, driven by Andy Green

interesting brakes! 

https://www.jcb.com/en-GB/explore/insight/news/2026/08/hydrogen-powered-jcb-hydromax-sets-406.320-mph-world-land-speed-record/
https://www.hotrod.com/events/jcb-hydromax-hydrogen-streamliner-406-mph-bonneville-world-record/photos