Isn't this convenient?
As you can see from the title, I wonder about the nuance of that sentence.
The situation is a man who eating lunch in restaurant, called his friend who is driving, and said "I left my wallet at home, so please come and bail me out".
So his friend who is driving a car, says "Oh, isn't this convenient?"
If you know this please help me.
And I want some other examples. thank you