Originally Posted by 
PhilipA
				
			 
			I have to note that glass can also be moulded into complex shapes. The Plastic ones are CHEAP to make that is all. 
I have never broken a headlight ad they used to cost very little anyway.
Disagree It must be cold down there. Get into a car at35C and the temp at 22C and you get blown away.
BUT they are the most troublesome single item in a D3 as evidenced by this forum. And they are only on the back wheels like a yikes Toyota. A drum will also pull you up and can also be used downhill as it works on all four wheels.
On a BMW when I last checked a few years ago they were $1000 more as they had to be genuine not aftermarket.
Now you are talking something completely different,ie the effect on you. I contend that the huge number of one headlight cars is a far greater problem and this does nothing to help that issue. I do agree that the ubiquitous daylight running lights do help ID a one eye as a car.
There are many worthwhile advances including remote central locking, cruise control, and maybe power windows, oh and computer control of engines and transmissions. ABS has never been proven to reduce accidents  but out of ABS came traction control and Automatic Stability Control although one wonders whether hoons will kill themselves somehow anyway.
Of course now crims can steel your fancy keyless entry car by capturing your data or by just attacking you in your house.
Regards Philip A