I picked up the GM all-weather mats (list price $130) for the Bolt and thought I would share them with you.
Nice thick heavy rubber to protect the interior
Plenty of areas to trap water and dirt
Custom fit for the car including anchoring points for the driver's side
The front license bracket is normally attached with steel pop rivets, I wanted something that could be removed if needed but is still firmly attached. My local Chevy dealer was happy to supply 4 push pins that work like a pop rivet, but can be removed by pulling the expansion pin out.