This is not a business idea but a deal because is temporary. The fact is to produce that car is going to be very expensive, and it may well be more expensive than the original cost of car. Do you want to protect a person inside the car or do you want to protect a car itself. The market for this product is also so limited and the growth after few years will decrease to 0!. I am sorry but this is a good deal but not a long term business idea.