From 4 wheels to 2

A couple years ago I learned how to ride a motorcycle so that I could ride 20 miles to work each way.  I average three riding days per week and get nearly four times the gas mileage.  I initially made the switch because I was bothered by all of the emissions I was putting into the air, but now I fill up for less than $10 and I take a route along the river on a scenic stretch of roadway.  The downside is that it takes a bit longer to get there and I do feel more exhausted.  Plus, there are daily close calls from automobile drivers with less than optimum attention or consideration.
I am also getting certified to teach so that I can (hopefully) find a job within my own neighborhood.