"I do see a need for a service that would provide a ride home for anyone unable to drive. It would make a great business for a couple...one drives the person home in their car or cart and the other would follow. This way the person drinking too much would get safely home and their car/cart would be there for them."
On the surface, that sounds like a good business. Chances are that the insurance risks would be too great to be practical, though.
Also, it reminds me of the story of the drunk in the taxi and he asks the driver if there is room for a 12 pack of beer and a large pizza in the front seat. The driver says "sure". The passenger
. Want that in your car?