The world's largest operating steam locomotive made its way through the Sooner State Wednesday. <br><br>Union Pacific Railroad's Challenger number 3985 is on a six state 3,100-mile tour through
Wednesday, October 31st 2001, 12:00 am
By: News On 6
The world's largest operating steam locomotive made its way through the Sooner State Wednesday.
Union Pacific Railroad's Challenger number 3985 is on a six state 3,100-mile tour through the Midwest. The locomotive is 122 feet long and weighs more than one million pounds.