Skeptics will scoff and say Mulally's decision changes nothing.
(Read more: Mulally ends Microsoft speculation, stays at Ford )
Mulally's decision should lift the cloud of uncertainty that's been holding back shares of Ford in recent months. Sure, Mulally is in his last year at Ford, but it could be a huge one.
* Slew of New Models
This year, Ford is rolling out 23 all-new models around the world. That's a new one year record the automaker.
The surge in new models will cut into profits this year, but will also set the stage for increasing sales in 2015, especially in the U.S. and China.
* Surging Sales in China
Don't look now, but China is rapidly becoming the second most important market in the world for Ford. Last year, Ford sold 935,813 vehicles in China.
That's a huge change from eight years ago, when Alan Mulally became CEO and the company sold a paltry 155,404 vehicles in that country.
(Read more: Ford develops solar powered car for everyday use )
In 2014, Ford will open two more plants in China which should drive annual sales in that country past the 1 million mark.
* Bad News Already Cleared Out
While investors soured on Ford shares after the company warned about lower profits in 2014, that warning also lowered expectations and cleared out a host of negatives for the year.
That's not to say Ford's challenges in Europe or with currency in Venezuala won't be a concern for investors.
Still, the bad news is built in to expectations.
* Smooth Transition to Fields as CEO
Mulally's decision to stay means the company can finally trumpet something that is already taking place: The seamless transition to its new CEO Mark Fields.
Fields is already taking on many of the day-to-day duties that once fell under Mulally. By the end of this year, his elevation to the job of CEO will be a mere formality.
(Read more: Lackluster December sales don't faze automakers )
Mulally's decision to end the possibility of him departing for Microsoft will be seen by many as a decision that is more about Mulally than it is about Ford. That's true.
However, the move means Mulally could end his tenure giving Ford one of its biggest years ever.
Questions? Comments? BehindTheWheel@cnbc.com .
image: © James Stewart