21. It allegorically refers to the demolition of Annie's dreams by the symbol of change and development-The road roller . 22. The first road widener was introduced in 1943 and other products followed, including road rollers for a brief time. 23. The company built their first diesel-powered road roller in 1911, from a design by a second-generation Hamm, Hans Hamm. 24. Shortly afterward, in 1880, a convertible model ( i . e . traction engine or road roller ) was introduced. 25. Much later the company also began creating models of road rollers , traction engines, steam wagons and other steam road vehicles. 26. In the early twentieth century Aveling & Porter were supplying about 70 % of the British market for road rollers . 27. In some parts of the world, road rollers are still known colloquially as steam rollers, regardless of their method of propulsion. 28. The first model toy they produced in 1948 & ndash; a die-cast road roller based clearly on a anglers at the time. 29. Later on it is shown that the a road roller dismantles almost half of the bean stalk enclosure, while surfacing a pathway. 30. As athletes competed at the venue, workers outside laid tiles to cover up earth and road rollers tarred the entrance to the facility.
