A vehicle includes a motorgenerator, a disconnect clutch disposed between the engine and the motorgenerator, and a transmission disposed between the motorgenerator and the vehicle drive wheels. The chain links feature pivot bearings molded integrally to the links, which take all loads due to drive tension and relieve the connecting pins of all shear stress. Safety of well stimulation procedures is thereby improved and well completion time is significantly reduced. Hybrid maize seed, plant or plant part produced by crossing the variety PH13H3 or a locus conversion of PH13H3 with another maize variety. The embossment is provided at a radially outer end of the restoring spring. PLA’s of the present invention consume less power than equivalent prior art PLA’s by orders of magnitudes.