imjps: All of those reasons are
exactly why I'm wanting to do this. My car averages 21mpg so it's not too bad, the main things I really dislike is just parking on 50 in the mornings or evenings and nearly getting clobbered by people doing their makeup/talking on the phone/reading the paper/whatever when traffic halts in a hurry. Additionally, if I stick with this, once I get in a good routine I can start working in some training intervals and ride in different zones and such. Then I can go out and rock at Prairie City in the summer. I went out a few weeks ago (before I went on vacation and drank away all my gains

) and did ok but I was dying at the end of my race.
Thanks, anotherbrian. I've been studying that map a bit I was just mostly wondering what the conditions of the trail were like. I've ridden Granite Bay to the Hatchery and it was nice, but I've heard sometimes bad things about the Cal-Expo area as mentioned above. I'm a relatively big guy so most people probably won't give me any issue, though at 7-8am and 5-6pm I don't expect much in the way of thugs
0gre: I'll be riding my Mountain Bike for now. It's got a lockout on the front fork and when I ride pavement I usually just pop it on, pump the tires WAY up (though I ride high pressures on trail too) and go for it. If I truly like commuting this way and stick with it for 6-7 months, I'll probably pick up a road/commuter type bike. Hopefully the lighter weight and the skinnies will make the trip a bit faster. My only concern if I like the commute is how I'll work it out when I have classes again at Sac State in the fall

. Luckily the trail goes right through there, and if I can do two days a week for all my classes I'll just drive those days.