So far, you've answered every question correctly! This is really interesting. Anyway, walking is obviously the way to get to church if at all possible. It's reasonably safe, it doesn't pollute the air, it doesn't require someone to take responsibility of a huge mass of metal moving at high speeds, it's great exercise, and it gives people the chance to do a bit of extra praying as they go to and from church. (I like to hum some favorite hymns.) Walking is definitely the ascetical way to go.