Body Finish and Composition
The exterior body panels are of brushed stainless steel SS304. This steel is usually referred to as "dairy grade" because the tanks and piping used in dairy farming (and in restaurant countertops, etc) are of this grade. It can be considered "food grade" stainless. This grade of steel is softer than SS316 which is more brittle and is usually used in more industrial applications (and in knives I believe).
The stainless panels have no "clearcoat" or other finish and is merely brushed.
The underbody consists of a monocoque fiberglass tub on which the stainless panels are hung supported by an epoxy dipped soft steel frame with a design borrowed directly from the Lotus Elan.