Get ready to bid on your ultimate dream vacation with Going Once

American Express  is offering  more than 25 amazing travel packages, including a luxury RV trip across America, an adventure in  Antarctica and a South African safari.   Travellers daydreaming about their next luxurious  getaway need  look no further. From 17th to 27th April 2007, US and UK American Express card holders will have the opportunity to stop dreaming and start bidding at American Express’ Going Once web site. American Express will auction off one unbelievable travel package a day and, once a trip goes on sale, the price will drop every  20 minutes. The deals will continue to drop in price until 7:00 pm ET or until they sell out, whichever comes first.