Is it safe to leave a car parked at work overnight? If so, I'd be thinking about driving in with the bike, riding home, then reversing the process the next day.
I used to do a 50 mile rt commute a couple times a week. That included a 10 mile ride to work, followed by a 10 mile ride to pick up a group ride after work and then back home. I was (1) younger then, (2) in better shape than I am now, and (3) frequently tired when I got home after those rides and the next day.