I was able to get the bike going again. It took a jaw puller and a bit of cobbling between the two motors. It looks like a wire was shorting inside the second motor they sent me. I used the armature from the first motor and put it inside the case of the second motor.

As for my commute, I like my mountain bike, but it would be nice to pick up the speed a bit. That being said, I found a bus route that shaves 10 miles and about 20 minutes off my commute. They have bike racks on the front and a ride is $1.50. I plan to take the bus for 10 miles and bike the rest and figure it will get me close to an hour one way. That's more like it.