What type of vehicle is constructed of sheet metal panels spot welded together?

The type of vehicle constructed of sheet metal panels that are spot welded together is a unibody vehicle. This design integrates the body and frame into a single cohesive structure, which enhances the vehicle's strength and reduces weight. In unibody vehicles, the sheet metal panels are welded together, allowing for a more efficient use of materials and space, as well as better fuel efficiency due to the reduced overall weight.

Unibody construction provides better stability and crash safety because the design helps absorb and dissipate energy in the event of a collision. Additionally, this method of construction allows for a lower profile and improves the handling characteristics of the vehicle.

Other types of configurations, such as full frame vehicles, typically consist of a separate frame that supports the body, leading to increased weight and complexity in design. Multiple piece vehicles and flexible vehicles do not specifically describe the unique construction style indicated in the question regarding the use of welded sheet metal panels.