Space shuttle Endeavour weighed roughly 170,000 pounds, yet its final 12-mile journey through Los Angeles took 68 hours at no more than 2 mph—crews repeatedly stopped to trim trees and squeeze its 78-foot wingspan past obstacles with inches to spare. - Space Daily
Source:Space Daily
Endeavour’s 12-mile museum journey took 68 hours because the 78-foot-wide orbiter advanced through Los Angeles one carefully checked clearance at a time.