Surely if i can learn to see the dragon then its no longer invisible and besides I dont even own a garage so the jokes on you dragon!
But seriously - not sure if you are psychotic or just an idiot. Thats a question Science may be unable to answer as yet
Yes, it would no longer be invisible to you, but, can you prove its existence? Its still invisible to everyone else.
For a factual incident of this sort, try looking up ghosts and angels. Many people have seen them. However, most of the science community says they don't exist.
Or look up the Mandela Effect. Half of the people remember something different. How is this possible, when the past is supposed to be the past and unchanging?