Time spent on a bus is time not spent concentrating on traffic. Relax, read a book, maybe do some work.
I remember long bus rides. In the summer, it was kind of 50-50 you'd get a bus with air conditioning. No AC? Now you sweat like a pig, which is really awesome on the way into work. This was marginally less oppressive on the way home, but only marginally less oppressive because when you got home you could strip off your sweaty clothes.
In the winter not enough heat wasn't the problem, too much heat was. Since I had to walk six blocks to the stop and wait at least 10 minutes, I had to dress for whatever outside was like in Minnesota in January, which usually meant dressing for 10-20F. Then you get on the bus and it's like entering a crematorium -- the heat blowing batshit, making it like 80 degrees. And it's crowded and you can only take off so much of your winter stuff, because there's no room to put any of it.
I did do a fair amount of reading, but working? The buses I rode were all like coach airline seats (although not as extreme as coach has recently become). There was no room to practically use a laptop and of course no tray table or anything to put it on.
I eventually gave up the bus and plowed an extra $200/month into a paid parking spot and it was actually LESS stressful. The climate control worked. The seating more comfortable. And despite periodic traffic headaches, it was less stressful to commute for 25 minutes in my car than to wait 10-15 minutes outside for the bus, sit on the bus for 45-50 minutes, and then walk another six blocks to get home. The daily one-way trip time from door-door was almost double on the bus.
It will be a cold day in hell before I commute on a bus again. I might be swayed if I had less than a five minute walk, the stop was climate controlled, and the ride actually on par with driving time AND the seating approximated a first class airline seat in terms of room and a tray table, etc.