Good point. I would be interested in learning what types of impacts (in terms of acceleration, preferably rotational) crasche is designed for, as well as its performance compared to traditional helmets. Do you know of any commonly used metrics that might ve useful for comparing helmets in general? If I remember correctly, the ASME standards use a very high acceptance criteria for linear acceleration (>100g) and do not account for rotational acceleration (which seems to cause most of the damage.)
This helmet is some neoprene (not rigid foam) inside pieces of a plastic shell. It doesn't look capable of passing certifications and the website does not mention any (or, actually, any data on how well it deals with impacts).
A 2006 study showed that “280,000 people in the U.S. receive a motor vehicle induced traumatic brain injury every year” so you would think that wearing a helmet while driving would be commonplace. Race car drivers wear helmets. But since almost no one wears a helmet while driving a regular car, you probably fear that if you wore one you would look silly, attract the notice of the police for driving while weird, or the attention of another driver who took your safety attire as a challenge. (Car drivers are more likely to hit bicyclists who wear helmets.)
The $30+shipping Crasche hat is designed for people who should wear a helmet but don’t. It looks like a ski cap, but contains concealed lightweight protective material. People who have signed up for cryonics, such as myself, would get an especially high expected benefit from using a driving helmet because we very much want our brains to “survive” even a “fatal” crash. I have been using a Crasche hat for about a week.