There certainly is a higher demand in recent years for these types of alternative fuel vehicles than there have been in the past.

近年来，对这些替代燃料汽车的需求肯定比过去要高。

Some independent thinkers have even produced cars that run on vegetable oil. But as we all know, of all these alternative fuel vehicles, the most practical are electric vehicles.

一些独立的思想家甚至生产了使用植物油的汽车。但众所周知，在所有这些替代燃料汽车中，最实用的是电动汽车。

Let's start with power. It's clear that petrol-driven engines have no future. Already there are many alternative fuel vehicles on the market, powered by anything from solar power to natural gas.

让我们从权力开始。很明显，汽油驱动的发动机没有未来。市场上已经有许多替代燃料汽车，可以使用从太阳能到天然气的任何动力。