Don't ever under estimate your spouse!

A married couple is 
driving along a highway 
doing a steady 60 miles per hour. 
The wife is behind the wheel. 
Her husband suddenly looks 
across at her and speaks in a clear voice. 
"I know we've been married for twenty years, 
but I want a divorce."
The wife says nothing. 
Keeps looking at the road ahead 
but slowly increases her speed to 65 mph.
The husband speaks again. 
"I don't want you to try and talk me out of it,
" He says, 
"because 
I've been having an affair with your best friend, 
And she's a far better lover than you are."
Again the wife stays quiet, 
But grips the steering wheel more tightly 
and 
slowly increases the speed to 75.
He pushes his luck. 
"I want the house,
" he says insistently.
The car is now at 80 mph.
"I want the car, too," 
he continues.85 mph.
"And," he says, 
"I'll have the bank accounts, 
all the credit cards and the boat!"
The car slowly starts veering 
towards a massive concrete bridge.
This makes him a little nervous, 
so he asks her, 
"Isn't there anything you want?"
The wife at last replies in a quiet and controlled voice.
"No, ... I've got everything I need," .
"Oh, really," he inquires, "so what have you got?"
Just before they slam into the concrete wall at 90 mph, the wife turns to him, smiles and says,
"The airbag."

Moral of the Story:
Don't ever under estimate your spouse!