I took him to an empty parking lot because we live on a steep hill and the bike was going to fast for me to hold onto.
Within about 15 seconds I could Lucas had no problem balancing so I took the gamble and let go. Lucas just kept going full speed like a champ. He has never ridden a bike with training wheels and his only experience pedaling is on his tricycle. I was shocked that he just knew how to do it.
The problem I soon discovered was Lucas had no clue how to stop the bike. We are still working on stopping and getting on the bike.The other problem I remembered the next day. The parking lot is only empty on holidays and after working hours so we are very limited to our biking time.