At this stage in the game, it is still very unclear whether one particular type of alternative fuel will emerge as a technological frontrunner. Different companies are currently building hybrids, plug-in hybrids, EVs, hydrogen fuel cell vehicles and clean diesel cars, all at the same time, and each has its own niche in the market. So apparently, Hyundai (and sub-brand Kia) has chosen to just build versions of each rather than risk guessing wrong and getting left out. But even as the company readies itself to bring a diesel to the U.S., big plans are afoot to also greatly expand the hybrid and EV options.