I live in Ipswich and work full time in Toowoomba. The drive is about 60mins. I have been doing it for almost a year. I am only working in a Toowoomba for a year. I have found it tiring but possible. The traffic is usually great and I have never experienced a traffic jam. Be aware of motorists who do not know that the right lane is for overtaking and also be aware of wildlife, especially when driving at dusk. I would recommend a very good car with radar cruise control and lane assist. Better still, get a car that practically drives itself (eg Tesla). I would not do the drive for more than a year however. After almost 12 months I am totally over it and getting fatigued. May I also say that Ipswich has some very nice areas (nicer than Spingfield). Examples of good suburbs in Ipswich are those around the Hospital, Sadliers Crossing and Woodend. I wouldnt drive to Tooowoba everyday from Springfield. 90mins one way is too much in my opinion.