The road to net zero carbon emissions from transportation is being navigated very quickly, supported by public opinion and encouraged by legislation. Some governments have chosen to ban combustion engines while others have not been so proscriptive. Telling companies that they must not supply vehicles with IC engines is clear guidance and allows business planning, but it might not be the best solution in the longer term.
Hydrogen can be employed in combustion engines of all types, from pistons to gas turbines. While the internal combustion engine has made big advances in efficiency in recent years, it remains inefficient as an energy conversion device compared with the electric motor.
