The largest vehicle in the world is the Bagger 288 excavator:
The excavator can shift 240 million kilograms of coal every day and is so big that it is easily visible from the air and can quite easily chew up a bulldozer:
Before the Bagger 288 came along the world’s largest vehicle was the crawler-transporter used to move the Space Shuttle from NASA’s Vehicle Assembly Building to Launch Complex 39.
With a maximum speed of one mile per hour it takes almost five hours to complete the four mile journey.