7/20/2006 in Roberts is set to advocate Biofuels Diana Feather Julia Roberts has become the new spokesperson for Earth Biofuels, a biodiesal producer. Roberts will also be the chair of the advisory board along with Willie Nelson and Morgan Freeman on the board of directors. Other celebrities, like Daryl Hannah, are advocates of the environmentally safe fuel. The company uses soybeans as a majority source for their fuel combined with fat-based products. Vanity Fair ran an all Green magazine advertising information about the fuel. Al Gore, George Clooney and Robert F. Kennedy were on the magazine supporting the fuel with Roberts. Earth Biofuels hopes their use of a new advocate will help them get use of their product in school buses everywhere. According to E!, Roberts believes we should all be using clean energy, it is better for everyone and everything.