Apart from the odd occasion when I miss my stop because distracted, reading is perfect for making the journey fly by. I wouldn't want to try anything serious because the block of time is too small, but "mere" fiction is wonderful.
Sometimes I'll play on my phone instead, or just close my eyes and semi-snooze listening to music. If I could park in central London and the traffic was light I still probably wouldn't choose to take my car there and back. Which is a pretty cool place to be imo
I can read a book or a newspaper while in a tramway or a bus only if I'm standing up, otherwise I get car sickness. I very rarely choose to sit down when using public transport for exactly this reason (strangely enough I can read while sitting down when riding the train).
It's particularly bad in the top of double decker buses, can't read there but still like to got there for the extra space and the view.