A 30 min commute is about all I can stand... I'm one of those unfortunates that needs a full 8 hrs of sleep per day, and since instructors tend to spend 10-12 hrs a day at work, a 1 hr commute each way would leave me with a grand total of 2 hours each day to do... whatever.
I'm sure we'll work something out. No kids but if we do have kids then she might start working only a few days a week, so we'll just have to see.