[quote=ChrisConvertible]
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Burning hydrogen as a replacement for petrol in an ICE will produce pollutants such as NOX so probably not an ideal solution. You may as well try to continue to run classics on petrol.
The next issue waiting in the wings will be an investigation into all the dust, micro particles, & crud we can inhale from car tyres & brakes continually wearing & being thrown into the air, DEFRA has suggested that it could be a larger public hazard than exhaust emissions