You're thinking of Me.dium, which turned into OneRiot and was then acquired by W...

nbouscal on March 28, 2014 | parent | context | favorite | on: Tesla Adds Titanium Underbody Shield and Aluminum ...

You're thinking of Me.dium, which turned into OneRiot and was then acquired by WalmartLabs. No relationship with Ev Williams's Medium. Also, Kimbal is on Tesla's board, so it's not just a family relationship.