I recently had an idea which is revolutionary to car travel. I would like to actually produce a prototype and gain publicity/funding for the idea, but I don't want to do anything until I have ownership of the idea. There seem to be several options available, but since this is my first attempt I can only guess on what is best. 1. Invention websites- These are all around and in many forms, the claim to offer patent assistance as well as assistance in bringing an invention to market, although they all take a cut of the profits and possibly rip ideas off submitters before a patent is filled. 2. A patent attorney- Haven't contacted one yet, so I'm not familiar with how much they cost or if they take a cut of the profits. 3. Submitting through the patent office directly- A time consuming process, but possible. The idea I have goes under the category "Why hasn't someone thought of this before?" as it is not a radical idea, but a radical application of existing technologies. My biggest concern is having someone rip off my ideas as I progress from a napkin sketch to prototypes. Any real life experience would be helpfull.