> I really need to start acting on my ideas. =A0And > that last word is plural, because I've missed a few others too in the > past. > Depressed, No need to be depressed. I think. There will always be opportunities. I have a file of my going back decades A few happen. Many don't. It's worth keeping just to see the ones that other people come up wit years after I do. ie I missed that one but I'm current with "steam engine time" and other opportunities exist. Or that I find have existed ling before I thought of them and been turned into a commercial product - ie I was late but it shows my ideas are good. I "invented" a rocket propellant pump. Turns out that the basic principle was patented in THE very first English industrial patent by Thomas Savery in about (from memory) 1769. Different but conceptually the same. BUT also Lockheed Martin patented almost exactly my idea 4 years before I thought of it. And when I (not knowing about LocMart) public domained mu idea some other people turned rather green as I was describing in public what they were doing in private (unknown to me). They are still developing the idea and have patented various other aspects. One day satellites in a certain size range will got to orbit using propellant pumps thought up by me. And others. And Thomas Savery in 17xx. I won't get any from it but it will be nice to know. Re the flying car. The best thing anyone can do is to sit down and write a vastly detailed description of every aspect of ways that this may be done and all the issues they can think of and more. And then publish it public domain. A truly level playing field. Russell --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .