Sonic Corp. expanded its popular and profitable hot dog line this week with the debut of a limited-time spicy Baja Dog.
The quick-service chain also introduced three new shakes.
The Baja Dog expands upon the four $1.99 hot dogs introduced in March, which the company has credited with helping improve sales. The Baja features an all-beef hot dog with pepper jack cheese, tomato slices, diced onions and jalapeños on a poppy seed bun.
J. Clifford Hudson, chairman and ch