Q. How do you make a free root beer float?
A. Mix root beer, ice cream and a big scoop of hype.
Helped by a rare, national TV ad campaign, Sonic — which owns the USA's largest chain of '50s-style drive-in fast-food restaurants — is betting it can make marketing gold Thursday night by giving away 3 million 10-ounce floats from 8 p.m. to midnight.
Customers love to gobble up fast-foodies' free stuff - USATODAY.com