I just read an article about former apple engineers working on a backup camera for cars. Since our cars are horrible to see when backing up I've been looking for a solution.
This sounds like a good idea. No wires to run, Solar charging, Smart Phone or tablet interface
The problem is as most Apple stuff it isn't cheap $500.00.
http://www.macrumors.com/2016/06/21/...es-rearvision/