This year nearly 100,000 people will be casualties on our roads. There are ways to reduce accidents - but they all cost money. Would you be prepared to pay £250 extra to have a safer car? Or be willing to be stopped at random by a policeman for a breath test? Or be legally compelled to wear a seat belt? Tonight Panorama looks at the rising cost and suffering of road accidents, and asks what price are we prepared to pay to make our cars and roads safer?