Losing in thought and autopilot kicked in

Every day I ride my bike from home to office. It takes 1 hour journey. During that hour, many times I found myself somehow teleported to certain distance. It is not magic, I simply lost in thought when that happened. I am so absorbed in my own thought that I am clueless to my surrounding, although my autopilot will guide me safely during that teleportation. that is only an example of many activities where my autopilot kicked in. Problem is, I feel that it is a mistake to be lost in thought. I feel it is not supposed to happen. I feel I supposed to being in present moment. So to counter it, I try to being aware of my body movement, such as opening/closing gas, shifting up/down gear. I recite the word in my mind when the body move. After doing so, I came to realization that my body movement/reaction is faster that my mind. the questions are: - Is it really a mistake to be lost in thought? - Is my way of countering have bad effect?