Actor Ewan McGregor is giving two motorcycle riders a once in a lifetime opportunity - a chance to ride with the Star Wars star as he competes the last leg of his lengthy 20 countries trek. The Scottish actor and friend Charley Boorman started their monumental motorcycle journey from London to Cape Town, South Africa, last month (May07) in a bid to raise money for charity. And to celebrate the final stage of the trip they are giving two riders a chance to join them. The auction will take place on Thursday (21Jun07) with proceeds going to Riders for Health, an organisation that provides healthcare in Africa. MCGregor says, "The work Riders for Health do is vital, bridging the gaps between communities and bringing health services to the people of Africa." Riders for Health CEO Andrea Coleman says, "(The auction provides) a completely unique opportunity to become involved in something that simply cannot be repeated."