I've always thought there should be a risk-o-meter in a car. In these days of sophisticated computers it ought to be possible for add one to a car that analyses the driving style and applies an algorithm based on the data being compiled. Then, when the driver gets in, it could announce (celeb voices will be available) 'your likelihood of severe injury or death during this journey is x. Your probability of a serious accident that may injure other people is y.' Perhaps there could be some en route annotation, say, when driving too fast it could add helpful comments 'your accident risk has just risen to z'.
You know, I think I'm only halfway being facetious.
Citoyen is right on a money, I think.
I'm sure I've told the story before, but I rarely let that stop me, but a year or so back I was walking across a pedestrianised area behind Temple Meads station (near the back entrance). There was a white van awkwardly reversing across the same precinct (presumably to make a delivery). The driver was on his mobile. There were no 'vehicle reversing' type safety features. There was a middle-aged woman walking towards me. At about this time, a cyclist rode through the precinct. Not particularly close to either of us, thought a little too fast. That said, unless he'd had to suddenly avoid a stealth elephant, we weren't in danger. Did I mention the white van about a metre away?
The woman as she'd passed said to me: 'cyclists really should be stopped from riding through here, someone is going to get hurt' (or words to that effect). The van might as well have been a stealth elephant.