Have you chaps in Oz got a "wear pad" on the drivers mat?
In NZ it is just carpet and we have noticed that where the drivers accelerator/brake heel is planted is wearing really fast - scuffed up after around 2,500km quite badly.
Toyota is replacing under warranty but we have been told they have not heard of this before. If your mats are the same as ours I can't believe no-one has reported this issue.
And, yes, I did
but found nothing
EDIT: A mate here in NZ has got a DIY drivers heel pad that cost only $15 for all the materials - and it is here for you all -
http://www.ft86club.com/forums/showthread.php?t=25376
.