An option which I did back when I had to move house when I was at uni is to look in the paper for utes for sale. Find one nearby and go and check it out, leave your car, wallet etc. for security and say you want to get the ute checked by a mechanic. Drive pick up your mats drop them off, drop the car off and say you will get back to them.
Dodgy I know but desperate times call for moments like this