Amsterdam won't have just 30 km/h roads. Those are just for the last mile. On the other hand, in Amsterdam there's usually going to be some sort of grocery sto

Amsterdam won't have just 30 km/h roads. Those are just for the last mile. On the other hand, in Amsterdam there's usually going to be some sort of grocery store somewhere in walking or biking distance; and a lot of train stations have grocery stores too, so you can just pick up some last minute shopping on the way back from work for instance.