3 wheel bike for my son

My son has Down syndrome, he saw this bike sitting in a farmers field junk pile and got very excited. After meeting the farmer that thought it was made of gold for how much I had to pay him for it. It was loaded and taken home.
The entire bike was rusted to the point nothing moved. The bars were locked, the rear wheels dragged, but after days and days of spraying it down with WD-40 and slowly working the nuts and bolts and making all the parts that were supposed to move, move again. It came apart so we could clean the last of the rust prep and paint the bike.
It is my son’s pride and joy, but that would not be possible without WD-40.