Wear and tear... the more kms you do the sooner it needs a service, tyres were out quicker and so on. Your not just burning fuel when driving a car. We all know they are made to drive long distances but you have to way up all the cost involved. I don't really care what the OP does. Heck, the wife and I Drove Toowoomba to Canberra in a day a few years back in our TDI Jetta. I looked at all the options and it was cheaper to drive then fly cause we were staying for a week and a half.