Yes zeta was in the van. 2 power leads. 2 x vacs on one lead, zeta on the other. Remember i was using the zeta to pump the water to the wand, so didnt use the pump on the storm (only for upholstery). The storm was very impressive, even with 150 ft vac pipe. But it needs 2 inch pipe for best performance. Sometimes I would take the storm off the van, to the front door, but still take the hot water from the zeta mounted on the van. This just made it less hassle on some jobs, and allowed for a shorter hose run, but still with constant hot water. Put the auto dump pipe into drain/garden and work away. A squirt of de foamer down the end of the vac pipe (at the wand end) when required.
One of the jobs I used this set up on was multi rooms in a nursing home. The storm was working on the 2nd floor, with the dirty water being emptyed via bucket down the loo, but the hot water came from the zeta, mounted in the van, on the car park 100ft away. The zeta only fires up when the wand is triggered, so I didn't need to go back to the van to keep switching it on and off!