The heaviest object moved by road freight

The heaviest object moved by road freight is an evaporator unit weighing 4,891 Tonnes (5,391.4 Tons), which was achieved by Almajdouie Logistics Company (Saudi Arabia), at Ras Al Khair, Saudi Arabia, on 22 January 2012.
The evaporator weighed 4,891,000 kg (10,782,809.24 lb's) and measured 124 m (406.82 ft) long x 34 m (111.55 ft) wide x 12 m (39.37 ft) high. This is roughly the size of a football field and the weight of around 3,500 passenger cars! It is one of eight such evaporator units moved as part of a project constructing a desalination plant.
Source: www.guinnessworldrecords.com