I had no idea.
www.bbc.com
Anyway, is Taco Bell's most important attribute being open until 2am?

How Taco Bell 'stole' the taco
Despite Taco Bell's international fame, Mitla Cafe has a place in the history of Mexican American cuisine as the first eatery to serve hard-shell tacos in the United States.

Anyway, is Taco Bell's most important attribute being open until 2am?