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xkcd #2932: Driving PSA
(imgs.xkcd.com)
Alt text:
This PSA brought to you by several would-be assassins who tried to wave me in front of speeding cars in the last month and who will have to try harder next time.
It doesn't work when nobody lives around either.
The only way this can work is if both all cars are from the 30s, only able to move at 50 km/h, and nobody lives around.