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That is an interesting idea, however certain tolls (e.g. london city) have not the goal to earn money, but to keep people away. playing ads won't keep them away.



In that case, the device could output not an advertisement but a 45-second uninterruptible lecture about what too much car traffic does to the city.

(but who would voluntarily install that...)


Or perhaps just 45 seconds of a baby crying or nails on a chalk board?


> but who would voluntarily install that

Deaf people of course ! :-)




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