HRI , according to my source , are about to launch a new TM beater , the concept sounds great , It will be well overpriced of course, just needs someone to build a copycat one at a reasonable cost.
It is a powerhead with the vacuum and a small holding tank attached so the vacuum is right at the extraction point.
They SAY proven vac strength is same as truck mounts. the waste water is pushed by a pump in the holding tank to a waste tank in van via a garden hose , solution is heated via the van engine.