The bulk of hydrogen commercially sold is generated primarily from petroleum and natural gas, meaning that in effect, the Hydrogen 7 puts about as much strain on the environment as a heavy truck with a diesel engine.
Other carmakers question BMW’s decision to develop combustion engines that run on hydrogen. A Volkswagen researcher, Frank Seyfried, has labeled the idea as “non-sense,” but BMW’s chief developer Klaus Draeger thinks there are still benefits to relying on the combustion engine, adding that “it's the only engine that meets our requirements in terms of dynamics." Read our previous report on the Hydrogen 7 by clicking here.