A vehicle having a structural bed configured to serve as a structural load-bearing member is provided. The structural bed extends rearward from a cab structure of the vehicle and includes a core layer. First and second outer layers flank the core layer and span substantially the entirety of the core layer. The first and second outer layers are composed of a material that has a higher strength than the core layer. The thickness of the core layer may be at least approximately 10 times greater than each of the thicknesses of the first and second outer layers, respectively. The composite structural bed may be integrated with mass-efficient structures to produce an efficient load-bearing structure for a vehicle.