I was unfortunate enough to get this in an irk. Dare I say this thing is actually GREAT, must have been some mistake! Does not work as well in the car but does the job, likely due to the amp draw required to turn the motors (tested in in-law’s minivan) but works better in non-infrared mode. I like that is comes with multiple AC/DC adapters so you can just leave them where you use it (home/work/car) and then only have to travel with the unit itself.
Having had a similar one, but without heated glowing red orbs, I can attest to it’s unpleasant pleasantry. It’s one of those hard massages that you think you want and then regret during only to feel better afterward.
That being said, if it goes in a car, it definitely should be for passengers only, as it may lead to unpredictable squirming incompatible with safe driving practices.