The ‘Breaking Bad’ Finale was a classic. Probably the most-watched final episode in over a decade, it was, for most viewers, perfect.
Too perfect, that it might have been a dream. The theory is hurled on Twitter, but a podcast by no less than the show’s creator, Vince Gilligan provides the logical explanations.

The episode, entitled “Felina” seems to have all the loose ends covered. The summary in Grantland: “His fortune was passed along to his family, his wife rewarded his admission of monstrous selfishness with an opportunity to stroke the hair of his infant daughter, all his enemies were perforated or poisoned, and his ruined protégé was liberated.”

The theory that the entire sequence from the snow covered car (surrounded by police) is already a dream, and that Walter White died in the car. This was proposed by SNL comedian Norm Macdonald on Twitter.

But the police came in force, and they surrounded Walt's car. Then the fantasy begins with car keys falling in his lap.

— Norm Macdonald (@normmacdonald) October 2, 2013

One thing seems clear.He never made it out of that car in the snow, surrounded by police. That's where he died, his final prayer unanswered. — Norm Macdonald (@normmacdonald) October 2, 2013

Series Creator Vince Gilligan responds to the issues brought up:
On the keys falling to his lap: “The keys kind of magically appear ... All of the sudden, lo and behold, the keys are there.”

On Walter not being seen until he makes himself visible (like a phantom) in Gretchen and Elliot Schwartz, in Skyler’s new apartment, and in the coffee shop where Lydia and Todd are meeting: "He’s sort of got the devil’s luck throughout this entire episode. He’s got someone looking out for him. And he’s praying to someone in that first teaser. I don’t know who he’s praying to."

On the song “El Paso” by Marty Robbins is meaningful. The cassette falls out of the glove compartment in the opening scene and the track plays when the car starts. The song’s femme fatale, Felina, was used as a title for the episode. (It is also an anagram for "finale," but Gilligan admitted he fudged with the original character's spelling.) And the common interpretation of the record is that the narrator is dying and hallucinating: "He kills a man, flees town, and his love for [Felina] is so great that he has to ride back into town for her. And he gets killed on the way back — and I guess we knew that was more or less what was going to happen with Walt."

"We wanted Walt to succeed on some level. It’s not that he deserves to succeed, morally speaking, and nonetheless you want it. He’s your protagonist. You don’t want it all to be for nothing."

Are the explanations good enough? Was it all just a dream for Walter? In any case, it is the end and we can debate on this forever.