4) Customer entering cabs with no money - cab driver loses time and money. 
Gee, I wonder why cab drivers have so many complaints of rudeness and being late due to roads that weren't plowed. Hmmm...
However, you Devin stating cab drivers aren't the sharpest "TOOLS" in the shed is a disrespectful comment and this type of attitude is what cab drivers have to deal with on a daily basis. Except now they have to deal with it basically for free. I'm sure you were born and raised here in the United States and you probably can't speak any language other than Engish. Yet, you still fail to spell "tools" correctly.