Motor vehicle sold 5 years back - ownership still not changed

Hello respected lawyers I sold my Maruti LXI car in Ghaziabad in year 2012. It was a UK (Uttarakhand) registration car. The buyer made all payment in cash but I demanded 100 rupees in cheque. After 5 years, I still see that he has not tranaferred the car in his name and continues to use it in my name. Suddenly I saw in Times of India a week back that Supreme court directed that original registered owner as per RTO records will be held responsible for any unfortunate incident by the sold vehicle even if we have the proof of sale. Supreme court reversed high court order and made registered owner responsible to save the victims from the agony of chasing subsequent buyers. Should I file a cheating case against the buyer. I sent him a letter ( not legal notice) few years back but he simply called me from some mobile phone and told me that he will get it done shortly. I still have his driving license copy and photograph and notary agreement as proof. How do I get my name off the RTO papers? Kindly suggest.