Reminds me of the story
On a given day, a given circumstance you think you have a limit and then you go for this limit and you touch this limit and you think ok this is the limit. As soon as you touch this limit something happens and you can go a little bit further. With your mind power, your determination, your instinct and the experience as well...you can fly very high.
Ayrton Senna
Reminds me of the story(urban myth) about the guy who bought one of those JATO units at a Air Force surplus sale, mounted it on the back of his car and took it out to road in the desert to test it.