A Car Blanket

I've decided I need to make a blanket for my car at some point. Obviously this project would be ongoing, but I want to get started soon. My beloved Subaru needs a colorful blanket to carry around, to use for impromptu picnics or beach visits, and for keeping warm when driving on crisp fall days and cold winter nights.

Here's what inspired me:

Graphic Granny by Katherine Eng
Crochet Flower Throw by Lion Brand Yarn (I just love Homespun!)
Bohemian Oasis by DROPS design