Technologically, it is already possible to produce nonpolluting cars that burn hydrogen rather than gasoline. But the national system of fuel stations that would be needed to provide the hydrogen fuel for such cars does not yet exist. However, this infrastructure is likely to appear and grow rapidly. A century ago no fuel-distribution infrastructure existed for gasoline-powered vehicles, yet it quickly developed in response to consumer demand. Which one of the following most accurately expresses the conclusion drawn in the argument? ['Hydrogen-powered vehicles will be similar to gasoline-powered vehicles with regard to the amount of consumer demand for their fuel-distribution infrastructure.', 'The fuel-distribution infrastructure for hydrogen-powered cars is likely to appear and grow rapidly.', 'It is already technologically possible to produce nonpolluting cars that burn hydrogen rather than gasoline.', 'If a new kind of technology is developed, the infrastructure needed to support that technology is likely to quickly develop in response to consumer demands.']