Everybody’s favorite trio of gearheads — Jeremy Clarkson, Richard Hammond and James May -- get their motors running as they return to host yet another round of the top-rated British automotive program. In this series, James tests a Toyota pickup by driving it up an active volcano in Iceland, and a Volkswagen Touareg is pitted against a pair of young snowmobilers. Celebrity guests include Rupert Grint, Andy Garcia and Jeff Goldblum.