Is that as natural as I can say it?

Hi, everyone. If I had a friend of mine over and we got drunk, too drunk to drive, so we decide that he better leave his car at my place and take a cab home instead. And then I'll drive his car to his place two days later so that he has it when he has to go to work Monday. So as he gets into the cab I say to him: "I'll come by with the car on Sunday."

Is that as natural as I can say it in the context?