Personal vehicles eliminate waiting. Waiting is the biggest problem with mass transit. It's preferable to have slightly longer journey times as long as your exp

Personal vehicles eliminate waiting. Waiting is the biggest problem with mass transit. It's preferable to have slightly longer journey times as long as your expected wait time is less. The tube runs every few minutes on popular lines, and don't suffer from congestion (when there isn't problems on the line), so they're acceptable. Trains running on a timetable less so (they make you pay much more attention to the time, and they're frequently delayed and increasingly often cancelled), while buses just feel like a massive waste of time.