I've commuted long distances (over an hour each way) by train and car for nearly two decades. When driving I try to get through my podcast backlog mainly on technical things, but also now more general stuff. Sometimes I miss the ability to bring the laptop out and do something fun, but then I remember when I did train in, I ended up working most of the time, and it became an extra two hours of work per day. Like all things, it's down to self-discipline I suppose.