actually... it states right in the rules that the gumball 3000 is not a race at all, you must obey any/all traffic laws in whatever country you are in, but the first one to the finish point does get a prize.
the entry fee for the 2006 event is 40,000gbp or just over $73,000 us, you gotta get you and your car/co-driver to the starting point in london, pay for your own gas, they pay for hotels, transport of cars and driver teams from stage 1 to 2hong kong, and 2-3salt lake city.
so figure about $100,000, for 8 days of trying not to get caught breakin all kinds of laws in a bunch of different countries, if you crash or get caught your S.O.L. no refunds, no return transport if ya miss the plane. hmmmmm, anybody wants to sponsor me..im in