Keep in mind that the Roadster is an extremely limited-production, high-end niche car that is no longer manufactured. Its value/depreciation curve will look ve

Keep in mind that the Roadster is an extremely limited-production, high-end niche car that is no longer manufactured. Its value/depreciation curve will look very different from a still-manufactured luxury sedan of a previous generation, which is what the Model S will be in 3-5 years when Tesla release a new style.