On the limited time spent on the Autobahn with my RS6 Audi or Kawasaki ZZR1400, I always found the biggest issue is fuel use, on my ZZR I could actually see the gauge going down at at anything over 140, 180+ you had to serious think about running out of fuel, it had such a small tank.
Things are a lot more sedate with the GTR1400 and Audi A6 Allroad.
So, managed to get some testing done today despite the lack of much usable sunshine down my way, my portable panels just werent kicking out enough
to fire the Wireless Series-R3 Micro Inverter up.
Notes:
1. Some of the MC4 Connectors are terrible, I thought at one point I might have to get a pair of pliars on it
2. Given this is a chinese device, the lack of power switch is somewhat disconcerting
3. It did generate power after I chucked my 295w panels on to it though.
4. Software is a bit clumsy, nNot sure what I expected but felt it should be more than this.
5. It didnt come with a UK mains lead only a M25 to M25 connector to link multiple inverters together (I butchered it and chucked it in to an inline distribution box to downsize to a 13amp wire/UK plug combo, this seemed to work ok, next time I'll perhaps buy one with a switch ^^
You can can see from my monitoring kit that there was indeed a reduction in power usage from the grid.
Pic 1
1. My baseline with the Fridge and Freeze idling.
2. Fridge and/or Freezer motors kicking in
3. 295w panel kicking in, it spent quite a while perhaps 1-2 mins synching before I could see any discernable difference in power usage
4. This was the best it got, my house excluding my office which is now offgrid during the day - Saw roughly a 60-70w reduction of grid power, my metering is taken of the mains before the Smart Meter.
5. Wife buggered it all up turning the TV on !!!
Pic 2
The unit doing its funky groove thing, still can't believe I didnt know this was possible before. I might have skipped my battery solution entirely. Although, its a different requirement.
Pic 3
I guess I saw maybe 60-80w's top but as I said bad solar day today and getting on in the afternoon, but the unit wasnt getting in the slightest bit warm, this is supposed to be a 1200w unit so really wasnt working too hard though
- this was the warmest I could find, it was for the most part still cool to the touch.
Pic 4
The software...I took the screenshot from my Mac running the app in IOS emulation mode, as I was hoping to grab some decent data out of it. But if you want some sort of consolidated stats then this is a tad basic.
Even though the unit is supposed powered on by the mains, no lights are flashing and it appears the bluetooth/wifi (Hard to say what the app is actually using) doesnt report the app working if there is no PV input.
Ears popped at least four times. 
!