A survey has shown that Democrat Bill Bradley is the only US Presidential candidate to support more rigorous car fuel efficiency standards, despite figures showing that the majority of voters favour raising standards for both cars and light trucks. The survey of the major Presidential candidates' views on car fuel efficiency shows that even Bradley's rival for the Democratic nomination, 'green' Vice President Al Gore, has shied away from stricter standards, preferring to encourage the US' largest car makers to produce more efficient vehicles.