Mat for a motor vehicle cargo compartment

A rigid removable cargo mat for a cargo compartment of a motor vehicle wherein said compartment has a floor and a front sill plate and a rear entry/exit way and wherein said floor has a floor drainage system adapted to drain from the vehicle any liquid delivered to said floor drainage system from said cargo mat and wherein said front sill plate has openings that are open to said floor drainage system, said cargo mat having an integral rear sill plate portion at a rear end of said cargo mat extending into said rear entry/exit way, said cargo mat adapted to be firmly supported above and by said floor, releasable fastening means for fastening said cargo mat to said floor, and said cargo mat having a top side with channels adapted to collect any liquid deposited on said cargo mat and direct the collected liquid to drain from the vehicle via passage over said rear sill plate portion and out said entry/exit way when said entry/exit way is open and also to direct the collected liquid to said floor drainage system through said openings in said front sill plate at a front end of said cargo mat when said entry/exit way is closed and also when said entry/exit way is open.