Transforming the existing diesel motor in 100% Methane and lpg!

Busses are used everyday by million of people. Electric busses are appearing more in everyday life. Are electric now-a-day a real solution?
I will present you a way to transform diesel busses in 100% Methane, lpg, or hydrogen.
Through a new spark plug and kinetic wheel is possible to:
Reduce the CO2 emission up to 90%
Reducing the cost of maintenance by 50%
Increasing efficiency life related to the motor and other parts by 80%
Drastically reducing the fire and explosion risks during hot season!
Can we use those technologies for heavy transport like ship cargo?