This reminds me of a kid I went to school with as a child. Always coming up with this "I got a pet dinosaur for my birthday, but I can't show you." routine. It just screams "Look at me!".
"Hey, guess what, have something for your car....but I can't tell you what it is.....". If this was real, why wouldn't you keep it to yourself until you have said patent (just a crazy thought).
I bet we will soon see a message, "I need money to get this venture off the ground, please send me 20 bucks and you can be part owner in the Mystery Marvel Super-de-duper Go Fast Part!!".
....My cynical side showing....I'll stop typing now.