To compel both the high-speed cruising on the highway and the rough road running performance on rough paved roads and unpaved country roads, American cars are required to have large body displacement engine with large displacement Equipped with a tire with a large flat rate and a soft suspension incorporated, therefore, fuel consumption is bad and small rotation does not work., but it is made sturdy so that it will not break even i fit is treated somewhat roughly. American cars in the 1960s can deliver maximum speeds approaching 200km/h even for general cars, vehicles equipped with V8 engines are advantageous in that there is less shaking and turning from large displacement to high rotation. The driving performance of this era continued the golden era of American cars, as there was no car following the American-made V8 engine equipped vehicle.