The premise is simple: no one would give the keys to their car to someone who’s obviously drunk. To prove this point, a Brazilian bar asked their valet to tie one on before reporting for duty. As expected, not one patron willingly relinquished their car to the staggering drunk valet. Here’s the kicker: printed on the valet parking ticket was a message that read, “Never let a drunk driver take your car. Even if that driver is you.” As the video below shows, the concept is so brilliant that we wonder why it hasn’t been done before.