I currently drive to work, it is 40km (roughly 25 miles) each way. Most of it is 4 lane divided highway with huge bike lanes. I cycle up and down this highway all the time. The rest is mostly industrial area with a single bike lane going from the highway. I started a new position at work and on alternating weeks I start at 9:30am and work until 6pm. I was thinking of riding those alternating weeks to save gas. It does seem like a long commute daily however. We have showers and change rooms at work, and I work as a heavy duty mechanic, so being clean and smelling nice is not a priority. Anyone else running a commute like this and have some advice to get started? Bike is an old fully rigid mountain bike with sickish 26" tires on it.