Your question relates to the wording of your contract with the bank. That is something I cannot read.
By experience however, banks do not like the keys dropped on their desks. They lend money and only take the car when their is no other method of payment. How you deal with this issue will effect your credit for a long time so care must be taken.
What do you owe versus how much do you think the car is worth?
What province are you in?
I'm in Alberta. I owe more than the car is worth. I'm upside down by like 8000.
The bank will get less for it so giving it up is not your best option. They will sell it for as much as they can get quickly.
You need to sell it privately and have a conversation with your bank.