I am posting the map for the place in chennai where you find most of the automobile stuff. This is to help people who are new to Chennai or who are not aware of it. There are lots of shops and you need to walk around this place to find what you want. The best thing to do is park your car at the Express Avenue mall and to do the walking.
The map below is specific to the place where you get a lot of home furnishing stuff (Bharathi road). This includes the foam, curtains, carpets, cushion covers and to be relevant to the thread the noodle mats
. There are lots of shops and its again better to do a walk after parking your car at the Express Avenue mall. The shops that sell noodle mats are on both sides of the road (highlighted in blue). You can find them as you enter the Bharathi road on either side. The shop that I bought (Jai Bharath Enterprise) is on the right.