Batboard

My wife delivers the news paper here in Phoenix, and uses a soft book. The damn thing keeps falling down. It has an arm that attaches to the front window via a suction cup. The cup cuts loose and the book falls. We deliver in my chevy S10, and here Nissan Altima.

Any suggestions for a soft book holder that mounts on the floor?

I think Troy makes some flat plastic laptop trays with a nylon strap that goes across instead of metal screws like most. The one I saw was a pipe mount they bolted to the floor. Someone may want to second the maker, I THINK it was Troy.