According to Official Guinness Records,
The world's largest covered wagon is 12.2 m (40 ft) long, 3.65 m (12 ft) wide and 7.6 m (25 ft) tall, and was hand built out of Illinois oak and steel by David Bentley (USA) in 2001. In 2007, The Abraham Lincoln Tourism Bureau of Logan County, Illinois, purchased the wagon for $10,000 (£6,147) from Bentley. They moved the wagon from outside his home in Pawnew, to Route 66 in Lincoln, Illinois, USA.The wagon was built to commemorate the 75th anniversary of the famous Route 66. A 3.6 m (12 ft) fibreglass Abraham Lincoln sits on the wagon seat.
For a complete list of 2001 records, please visit 2001 Guinness Records in United States.