Having walked down enough creek beds in my time specifically looking for shiny rocks, I can assure you that every era after the planet cooled down and had flowing water was "shiny stone era" including now.
Maybe not "melted shiny stone" but who cares when you've got a cool rock!
Toyota and Nissan are very much not known for their trucks here, it's mostly sedans.
Which are ALSO giant and shitty.