My father's hobbies

My father and his best friend have all sorts of 'weird' hobbies. Well, they are weird to me anyway. They enjoy doing things like restoring old cars or building custom ones. Luckily, the friend owns a machine shop that has industrial clamps and machines for lifting heavy objects and all that fun stuff. The two of them also race some of the cars they build. They seem to have fun but that doesn't make it any less odd to me.