The big clean-up. A fleet of little trucks ensures that the track in the Olympic stadium is as spotless as a kitchen floor. First, these trucks scrub (...)

Original Toronto Star caption: The big clean-up. A fleet of little trucks ensures that the track in the Olympic stadium is as spotless as a kitchen floor. First; these trucks scrub and wash it; next; giant scrapers squeegee off water; finally; other trucks with huge vacuum cleaners mounted on the back roll around the track and make it absolutely dry.