Split it into "commutes by car" and "commutes by public transport". I know when I used to own a car I was ridiculously prepared, even having a shovel in the trunk. Now with the subway, basically nothing - I have a whole city full of services to help me or anyone else in need. Or five hundred people on the subway train with various skills and items.
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.