The new, limited-time drink is basically Red Bull as an icy slush. There's also a Cherry Limeade Red Bull Slush that mixes Red Bull energy drink with one of Sonic's best-selling slush flavors.
The price for a medium-sized cup of either Red Bull Slush is $3.99 (may vary). As they'll be stocking Red Bull during the limited-time promotion, you can also buy an 8.4-fl-oz can of Red Bull for $2.99 at participating locations.
Photo via Sonic.
