Half-way through the shooting of the martial arts shots, Tim Allen's arms became painfully bruised. This is why he randomly starts wearing pads in the middle of the story.
The scene where you see Joe passing the Macaroni Grill twice on his way from home to work is geographically incorrect. It appears on the left side of the highway which means he was actually driving towards Minneapolis, his supposed home, instead of away from it. In fact, the Macaroni Grill is even more west of downtown than where his office was located so he would never be on that part of the road going to or from work at all.