What you heard about the car accident and the rape-murder case is the unfortunate reality.
In india, everything is up for sale. You just need to pay the right people the right amount of money.
Court, judge, politician, police, doctors, everyone is up for sale.
That porsche incident showed that police, doctor all took bribe to alter reports. The criminal was the son of a rich real estate developer (if I remember correctly).
You should seek justice and do the right thing, no matter what.
There are certain things which are not in your control. So, you can do what you can do at this point.
Also, there are 100s of cases where rich and powerful people have gone to jail.
So, don’t lose hope just because the accused is a powerful guy.
There is no straight n easy answer. You can file formal complaint with the police. Contact a good lawyer in India and seek prope legal advice. Do not lose hope.
Also, Karma is there. I believe in karma.