Has anyone tried cutting and scoring their trunk floor mats to be foldable?

[Mavrx]

Thinking about cutting down the 60/40 line and scoring where the chairs fold up then attaching velcro tape to it to mimic those canadaian floor mats. If you've done this, what did you use to cut and score? I'm thinking about using my table saw and scoring with an exacto knife.

 

[OaktownACE]

Funny, I was just looking on eBay for a rubber mat I could cut. I’m really curious to hear if anyone has done this or if anyone has seen a trimmable rubber mat that might work.