Clarkson is critical of the green movement and environmentalism, including groups such as Greenpeace—he has called them "eco-mentalists" and "old trade unionists and CND lesbians" but has also said that, although he "hatethe movement, [he loves the destination" of environmentalism and believes that people should quietly strive to be more eco-friendly. He has been dismissive of windfarms and said they will be described as "a reminder of the time when mankind temporarily took leave of its senses and decided wind, waves and lashings of tofu could somehow generate enough electricity for the whole planet". Clarkson has spoken in support of hydrogen cars.