Something you will never ever see in the USA. And the government would do anything to stop it

I was in Tokyo, Japan to complete my work visa for South Korea.  I wasn't there longer than a day.  On my way to my terminal I saw this very, very intriguing banner.   The idea was amazing and so foreign since the US is now the #1 Nanny state right behind the likes of Venezuela and maybe Cuba.

Vitamin C sprayed at you from your car?  I'm not sure the idea would catch on. But would an American entrepeneur even try?  I doubt it.  He'd be afraid the heavy foot of the regulators would come crashing down on his neck.