The preview by itself does not reveal a lot. All we know is Cardi B stars in what might be one of three previewed spots (or perhaps one longer one) by Pepsi.
Other previews have featured Steve Carrell and Lil John.
In this one Cardi B is seen in a old fashioned diner, tapping on a diamond-ish encrusted can.
In addition to the star studded previews, Pepsi is also slated to run commercials for Doritos and Bubly.