Spot on GTO.
In fact TVS has been in this space for sometime now. They have a chain of outlets, mainly in Chennai, called MyTVS which is basically a mutlicar service station... The other problem is, with vehicles having more electronically contorlled parts, the lower end independent garages are not able to service them to the fullest. The investment required to obtain equipments that are required is very high and this actually brought about a lack of alternatives for servicing.
Many car manufacturers are also making it difficult for independent garages to procure spares for their cars. All vehicle manufacturers are looking at increasing revenues from serivce and are looking at a level where the entire cost of running a dealership can be met through the income from service.