The drive up restaurant that just keeps getting better!
The chain announced today that they will be now selling the ultimate Spring/Summer afternoon slush - infused with Red Bull!
The two flavors that will be available is "Original Red Bull" and "Cherry-Limeade Red Bull". They'll cost right at $2.99, which is about the same price as your normal cup of coffee in the morning - but hey, it takes JUST like a red bull, just infused with a little Sonic flava!
But don't wait too long to get them - they're only available from the end of April to June.