With this massage seat you could use it in the car and then take it to work with you to provide a soothing massage at the desk.

This is the only portable massage seat available that is powered by a rechargeable battery, transforming any chair into a gentle vibrating massage platform for your back and hamstrings during prolonged periods of sitting on an airplane, at work, or while driving. Six vibrating motors throughout three massage zones deliver a deep, soothing massage and an integrated heating element relieves stress and facilitates blood flow throughout your back and hamstrings. An attached handheld controller allows you to select a preferred massage intensity, focus on a specific area (upper back, lower back, or hamstrings), and turn on the heating element.

It sounds cool but I don’t think it would be a patch on the iSymphonic Chair that we’ve tried. You can get the cordless rechargeable chair for $249.95.