A 45 mile commute isn't gonna happen. If a person road at 30kph it would take 2hr 24mins one way with no stopping, for traffic lights. To start work at 9AM the rider would have to leave at 6AM and get up even earlier. Then they have got to get home still, another 2hrs and 24mins. I have done a 90km RT ride to work once and that was enough to convince me to find another solution. Rides of that length take too much out of the system. Not to mention that a fair amount of the ride would be in the dark.
I would suggest riding in to work Tuesday and Thursday and organising a lift home via some other mode of transport.

I ride to work 45km one way and get a lift home. My wife works around the corner from me. She drives in and takes my bag of clothes in the car. I ride to her work, pick up my bag, ride over to my work and lock up my bike, and have a shower and get changed. At the end of the day I grab my bike and put it in the car, and get a lift home. This way I can ride in Tue, Wed, Thurs and get in 135km without feeling stuffed at night time. There is a solution for every situation.

Good luck.

Mark