Andrew over at Jobacle is treading on my turf with this post about changing up the driving commute :). Personally I commute about 25 minutes just to get to the train station :), so I tend to talk more about the latter. But many people do drive, so anything that keeps the road rage down is a good idea with me. Here's a few more from my experience:
Change when you leave. What happens if you leave the house 10 minutes earlier? You might get to work 10 minutes earlier....or you might hit even worse traffic because the sun comes up over the trees just right at the onramp and gets right into everybody's eyes. What if you leave 10 minutes later? You might find you get to work even faster, especially if you couple a time change with a route change, as Andrew recommends.
Clean your car. If you have a tendency like I do to eat breakfast during your commute, you're probably making a mess of your car with crumbs and trash. Don't let it pile up, and dear god don't just throw it in the back seat. When you park your car and get out, take a minute and take the trash with you. You'll feel better. Pick up one of those cigarette-lighter vacuums if you want to get the crumbs. They may not be powerful, but they do a fair enough job.
Find where all the service stations are. If you need your car to get you to work every day, and your car needs service, what do you do? Take it to a local place and miss work? Maybe there's a place close to work you could drop it off. The same applies for gas stations. If you need gas before hitting the road home, know where the good stations are and don't just jump on the one that's between you and the highway, that's going to be the most expensive one.
Pay attention to you. The most stressful part of the commute is always the other guy. Why does he get to drive in the breakdown lane? How come he gets to weave in and out of lanes like that? How come he never gets caught? If I did that, I'd get caught! You know what? Who cares. Never mind him. Worry about yourself. He's not doing anything to you except stressing you out. Drive carefully.
If you've got no problems with your commute, then don't change it. What all these tips on both posts really come down to is, "If you don't like it, do something about it." If you hate your commute, find ways to improve it. We all know that the best commute is no commute, we'd all love to own our own businesses that are a 2 minute walk from the house where we can come and go as we please, setting our own hours. For most of us, that's not happening. We have day jobs. So whether your commute is 10 minutes or 90, you can decide the attitude you go into it with. If you hate it, then Andrew and I just gave you 11 things to do. Get started.