You could count me as an enthusiast if that means:
- wanting to keep the car very clean
- buying exotic products to maintain the paint
- wanting to learn about the various sub-systems of the car
- wanting installation of ICE and other accessories to be done absolutely correctly and not "desi"
- paying attention to safety issues
- on the lookout for new products/accessories
- interested in new car technologies
- wanting to able to drive well
- be able to drive fuel-efficiently when required or desired
However, I don't think being an enthusiast means driving fast on public roads in India. On most roads, that's either not possible, or just stupid.