Hey man .. sorry for your car
What do you need to do is
* Find a garage in industrial area that would buy it.

* The garage will give you a recite to take to the traffic department.

* Take the recite and the plate number to the traffic department and tell them that you want to cancel your car.

* They will go to the garage to see if the car have no accidents ( coze maybe u hit someone'e else car and then you sell it to SCRAP ).

That's it, i would take about a week to finish all of that.

good luck