From 1989 to 2004, the South Dakota Air and Space Museum located on the grounds of Ellsworth Air Force Base displayed a 10-ton, 3/5 scale "Honda Stealth," a mock-up of a stealth bomber built by North American Honda in 1988 for a national automobile campaign. The mockup is not an actual replica of a B-2, but was close enough to create a stir that Honda had cracked national security, as the B-2 project was still officially classified in 1988.[8] Honda donated the model to the Museum in 1989, with the stipulation the model be destroyed if it was replaced with a different aircraft. The Honda Stealth was dismantled and replaced with a B-1 Lancer aircraft in 2005.