You obviously didn't drive if you were reading, napping, catching up on email, playing games (at least I certainly hope not). At least within the US, a typical commute (with the exception of very large cities such as NYC, Washington DC, Boston, Chicago, which have large public transportation systems) involves spending time driving their own car, which essentially prohibits any activity other than listening to music, and maybe talking on the phone. So yes, it's wasted time for most of us.