Has anybody used one? I've been thinking about getting one for a second dose of cardio each day. I know there is no way I'll get my tail across town to the gym TWICE a day.

Right now I've got a little injury that is healing, but I'm hoping within the month I'll be back on cardio. I called a local Play It Again and they do not have any in stock. I thought that would be a great place to try one out.
They have a guarantee, but I know how that goes. I have to spend two hours taking it apart and then boxing it back up in the carton it came in. No thanks!