How would you like to get some of your friends and start a food delivery business? Find a niche and go for it. You might go rich overnight. For instance, some graduates from some random city have focused on delivering lunch to office workers only. Their company is quite fresh though. But then, it delivers lunch on a daily basis to over 500 office workers.
I think that it is imperative to come up with something unique that draws some interest. These guys deliver food from one restaurant per day. They make money from their office workers, but they also make money from the agreements with the respective restaurants. They do not provide too many options, but just three options per menu.
Come up with some special offers as well. Give you clients a large bottle of soda for every five meals or have them order before 10AM if they want their orders right before lunch. Dedication is the key, but innovation makes the difference.