The DIY car posted here still wins on range, but by 12% versus Roadster instead of 38% versus Model S. It massively wins on price ($13K DYI BMW, not counting labor; versus ~$70K for a used Roadster + battery upgrade), and loses on safety. [The Roadster is not as safe as the Model S and hasn't been crash-tested, but is presumably safer than this thing.]
The DIY car posted here still wins on range, but by 12% versus Roadster instead of 38% versus Model S. It massively wins on price ($13K DYI BMW, not counting labor; versus ~$70K for a used Roadster + battery upgrade), and loses on safety. [The Roadster is not as safe as the Model S and hasn't been crash-tested, but is presumably safer than this thing.]