在过去几个月里，用户对丰田气车安全问题表示怀疑，对这一点我负全责。

In the past few months our customers have started to be unsure about the safety of Toyota vehicles, and I take full responsibility for that.

前油业大亨皮肯斯这样的支持者也一直以来试图将其作为电煤的替代者和在新型的天然气车中作为汽油的替代者。

Advocates like the former oil tycoon T. Boone Pickens have also long sought to promote it as a substitute for coal in electricity generation or gasoline in a new generation of natural gas cars.