no. your loan would be paid off, truck taken, you would be walking home.
HOWEVER if you owe $50,000, and the truck is worth $10,000, and you total it your truck would belong to the insurance company, and you would owe the bank 40,000 still.
they determine value.
the way they do it for uncommon cars and trucks is to take selling price of the last ones sold or advertised for sale in your area. average them out, deduct money, about 20% and say that only 1% of cars are in excellent condition. they hand you a check for half of what it cost to replace or pay off you truck. again your screwed. thats why if your bank offers it getting gap insurance from the bank is the best protection.
i have been down this road before...