Hot Wheels id is slowly revealing itself [UPDATED POST]

UPDATE: This is the full package of HW id. It seems like the R35 is part of a 6-casting set, and confirms the toys-to-life angle. Original bit follows:

This underside photo confirms the speculation: it’s Hot Wheels amiibo.

Information remains scant, though. There’s still no batch listing, or even pricing or release date. Just what could this be?