From the meta description tag: the original website was used for 'nutrition guide, locations, franchise information, and career opportunities'.

While I've never seen anyone actually browse the Taco Bell website, it seems like they will still need a web presence for hiring and making nutrition guides available (if not legally, practically). Taco Bell probably doesn't drive many sales from their website, but I have heard of people applying for jobs or checking out nutrition info online.

[edit for clarity]