For the past week or so, I've been trying the city streets instead of the freeway for my commute. I can't say that it's much faster, but it's so much less stressful that I think I'll keep doing it.
Another benefit is that I'm not breathing as much concentrated exhaust, since my truck is porous very efficient in blowing in the outside air. Less stress and better air means I don't feel so beat when I get home. Yay!