 With Webber 's switch from Jaguar to Williams at the end of 2004 , the challenge was postponed until 2006 , when he was able to secure a three @-@ year deal with the Tasmanian Government to hold the event . The 2006 event ( now named the " Mark Webber Pure Tasmania Challenge " ) was held over six days and covered nearly 600 km . Twelve teams competed in the event , and it raised A $ 500 @,@ 000 for children 's charities . 
