Why do you care? Also, this shows up quite nicely on X-rays. Metal detectors, no. But it’s also not terribly useful without any cartridges which are very detectable by multiple methods…
No they wouldn’t. It’s not an issue of amount of land mass. That’s always a stupid argument. Just compare urban to urban. There’s a lot of empty, mountainous areas in Japan that don’t get coverage.
Single occupancy cars will just cause more congestion as you’re reducing the efficiencies of transportation density. You might as well just ban personal automobiles all together and only allow public transportation and private/professional serviced transporation (chauffered, taxis, shuttles/vans). Then everybody would be stuck with walking, riding a bicycle, or perhaps a moped/scooter or motorcycle with licensing broken down over displacement classes.
I’d prefer an tachometer over a speedometer. Also a water temp and oil temp/pressure would be nice.
Also, just shutting off the engine if a driver takes both hands off of the wheel, is a very BAD idea. That’s essentially not really solving anything and potentially causing an accident as you’re likely to be also killing the vacuum source that boosts your power brakes for something as trivial as having to scratch your nose. Some have enough residual in case of power loss or leakage, but it’s still not a very safe idea, and don’t even get me started on people who drive manuals and need to take their hands off of the wheel to shift.
IMO, the real crux of the problem is that licensing is simply too easy. The minimum amount of driver instruction is so pitifully low, and the tests too ridiculously easy to pass. Getting a car and operating one becomes an afterthought compared to all of the other things people spend their time doing. Plus it doesn’t help that the more driving aids we put into a car, the easier we make it for the driver to become either distracted or preoccupied by any task other than the task of driving.
