No, not really a machine, but I found once I started to see changes in myself I knew I couldn't go back and I wanted more changes so became incredibly focused and this also happened around the time of the first bomb my H dropped on me, so it became something to take my frustrations out on.
I too love the spin classes, I became a bit addicted to those and was doing 3 classes a week, I had to back off way too much cardio.
BTW what's a Martini lunch? Haven't heard of that before.