Ti plate the engine cylinders (and heads). This will double the amount of nuclear fusion burning petrol/diesel does
There is no chemical source of X-rays of helium. So the Ti plate doubles 'r'. Sp we more than double the power of the engine. Present car engines produce Helium, and give off X-rays. So do steam engines.
Or we can use a steam plasma to do Molecular Nuclear Fusion
2 H2O+TU->E3+L+X-ray E3=2.4 MW of heat from a 50x1cm plasma tube.
We use the steam to generate electrcity. Thermoelectric pads have an efficiency of 4%, at 650oC. They are already usig tehm to drive a bike – but use a diesel engnie to supply the heat. Use a steam plasma tube. No CO2.
A small steam cycle will give 65kW, from a 25x1cm steam plasma tube. This is massive power, and small steam tubnies may be 20% efficient.
So no Fossil Fuels burn. Elimmmmmanate fuel burn totally