Contact a lawyer immediately. You are going to need one.
The guy that sold you the car committed fraud. Tell him and his brother that unless you get fully reimbursed for the car (hopefully you didn't spend too much on repairs after you bought it) you will report him to the police and sue him. Next time you buy a car get ID from the seller to make sure it's titled to the seller.
is this vehicle currently registered?
Your vehicle should be registered in the state you live in.
What is the total no of registered motor vehicle in Mumbai up-to 2009?
As long as it is where the registered owner of the vehicle legally resides it is legal.
That depends on the country where the vehicle is registered and then perhaps the state of that country.
NO
Get it registered and pay for it or sell it.
The dolly needs to be registered, but the car does not.
how
You can have a vehicle registered in your name. If your licence is suspended, you simply can't drive it.
The vehicle must be registered in order to be driven on public roadways.
It can be registered, but the repo man is still coming for it.