Chicago had its artsy cows. Washington was flooded with colorful elephants and donkeys. And even Cape Hatteras, N.C., was home to life-size art horses, some decorated with wings. But art trains? That'll be the story next month at the George H.W. Bush Presidential Library and Museum in College Station, Texas, as the former president's operation puts on an eBay auction of trains to replicate the other cities' fundraisers. The plan for the September 29 auction: Sell off 34 painted trains known as "Locomotives on Parade" to help fund the 41st president's popular facility. The trains are painted by Texas artists, will start at $500, and will come with a Bush signature-if the winning bid tops $2,500. These aren't knickknacks for your shelves: The trains measure about 6 feet by 6 feet by 3 feet. Each has a theme like the "Let's Roll" train named for the 9/11 rallying cry.