Besides being eco-friendly, the fuel cell cars get excellent mileage.

除了环境友好外，这种燃料电池还能让汽车驾驶更远的距离。

But fuel cell cars still face one major obstacle.

但燃料电池汽车仍面临一个重大问题。

Finally, after 20 years of research, there is a hydrogen fuel cell car now.

经过20年的研究，终于有了氢燃料电池汽车。

Some fruits of this research is a new solid state battery that could be in cars by 2020 and a hydrogen fuel cell car called the Toyota Miari.

这项研究的一些成果是到 2020 年可用于汽车的新型固态电池和名为 Toyota Miari 的氢燃料电池汽车。