It was actually, in fact, my justification to the wife for buying the bike in the first place! Riding about 15 miles into Boston each way to work, mostly surface streets from the North Shore suburbs. My gas price is about 1/3 of what it was. And parking is free compared to the $12/day that it was.
The economics are compelling:
SUV:
$8/day in gas at 15mpg
$12/day in parking
$3 for tolls
= $23/day
FJR:
$3/day in gas at about 40mpg or better
$0 in parking
$3/day for tolls
= $6/day
I'm commuting about 10 days a month. (I get to work at home fairly often and travel quite a bit as well.)
All in, for the month, I'm saving about $170 a month, up to $2,000 a year. And you know that gas is only going to get more expensive. This has been a great deal for me. (When the weather gets really bad, I'll drive the SUV or take public transport.)
I'm definately riding my FJR to work, and generally having a lot more fun getting there!