We could get a ticket for anything...especially in NJ
Biggest thing is that if the police smell alcohol in the car, no matter how many times WE can tell the cops that we didn't drink, we could still possibly get detained (happened to me a few times before being a designated driver)
More pre-cautionary than anything else. And if she/we DO get pulled over and something stupid happens because of it, better to have someone else deal with some of that aggravation.
It SHOULDN'T happen, but when it comes to police and us black people, anything's possible