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Additionally, the use of computer-aided design (CAD) and computer-aided manufacturing (CAM) systems assists in the design and production phases. These systems enable manufacturers to create detailed models of the cab structure, allowing for better planning and execution of the assembly process. Furthermore, they support the simulation of workflows to identify potential bottlenecks and improve overall efficiency.
cab assembly line

In contrast, unibody construction integrates the frame and body into a single unit. This design is commonly found in sedans, crossovers, and many modern vehicles. The unibody structure typically provides better fuel efficiency and handling characteristics due to its lighter weight and improved rigidity. However, repairing a unibody vehicle may be more complicated, as damage to the body can compromise the frame's integrity.
frame chassis
