There is this robot that someone invented. It delivers your groceries to your door and saving everyone trouble.  It has 9 cameras and a GPS to help it navigate. It also has a two way audio system  just in case someone tries to steal it. You would be crazy to try to steal it though because you would be easily recognized through the cameras and audio and there are sensors too.
I think that this is a cool idea, but I don't know how well it would work. Here is the website.
Here.