If you look at the picture Ron has posted you will see that Ron has had the carpet overlocked. Overlocking is essentially stitching over the ends of the carpert so it wont frey and it looks good. Overlocking a section like Rons can be done for around $20. The reason most people overlock that section (me included) is that it is much easier to use 2 sections here because the upper section of the trans tunnel is so much wider than the lower part. Because it widens so fast it would be very difficult to use a single piece without have creases or folds. Hence why car manufactures us molded carpets.
In my last post about the different carpets I forgot to mention auto carpet
Auto cartpet is rubber backed so that it is tough and tends to be stiffer and hold its shape on unusual angles.