Skateboard deck and spring-based truck

A skateboard, comprising:

• a deck including a first layer formed of synthetic material, a second layer formed of synthetic material and substantially coplanar with the first layer, and a middle layer substantially coplanar with and coupled between the first layer and the second layer, the middle layer formed of synthetic material defining an elongated opening extending lengthwise from a front portion of the deck to a rear portion of the deck;
• an elongated member formed of spring steel extending lengthwise within the elongated opening and spaced from at least one surface thereof to allow relative movement between the elongated member and the elongated opening;
• a truck assembly including a baseplate coupled to the second layer and having a pivot arm hole, a first kingpin hole and a spring holder, the truck assembly further including an axle housing having a second kingpin hole, a first end and a second end;
• a wheel axle coupled to a wheel on each end of the wheel axle;
• a pivot arm inserted into the pivot arm hole of the baseplate;
• the first end including the wheel axle and the second kingpin hole, and the second end including the pivot arm;
• a kingpin coupled to the first kingpin hole of the baseplate and to the second kingpin hole of the axle housing;
• a non-elastomeric spring member provided substantially parallel to the kingpin and coupled to the spring holder of the baseplate and the first end of the axle housing such that the non-elastomeric spring member stores mechanical energy from force applied along an axis perpendicular to the baseplate.