This is definitely ideal, but is it achievable (in average, not for any individual) in larger cities even if they are built for walk/public transit?
I don't have much experience in Europe, but I knew in Tokyo, which probably has the best public transit in the world, the average commute time is one hour. This is obviously an extreme example as Tokyo is a megacity, but I think majority of people cannot live 25 minutes from their work for any cities that have 1M+ populations, regardless how the city is built.