Alternative to carpet

How about floor leveler, and a nice luxury vinyl plank or ceramic tile? Ok, kidding aside, I thought I saw or heard of someone doing the bed liner type paint and Race Deck.
The rear deck of my high school 65 Barracuda was laminate wood flooring (even the back of the seat)! The interlocking strips kind or maybe it was just one panel, had small grooves every 4 inches.. finished with laquer so it was slick as snot. Made the rear 8" speakers sound great and it as very well done. I thought it was stock until I saw another. IIRC its not completely flat back there, is there a small rise somewhere? This stuff layed flat.