errr G'Day, an' that..

Yer gunnna find the comments on inverters mostly rubbish
input IF you are intending living "on the road". Take no
shortcuts here with preserving your foodstuffs. Food and water
are the two essential items you *must* cater for when moving
around.
Anything "mobile" you will find in 12Volt refrigeration in
this Country is limited to around 50-60Watts. The appliance
running at that level of consumption wouldn't keep a steak
fresh for more than a day.. if you like a beer!
Power up, investigate a sine wave inverter and _spend_ the
money!
Next go find a small 240VAC fridge with freezer space that suits the
lifestyle you _think_ you will endure. You can upgrade later, easily.
With management of the vehicle alternator, PV and a pure DC line
battery charger it is very possible to run and be efficient in most
Australian climes. Be aware there are cloudy days north of the
Tropic of Capricorn, lots of them, and low solar saturation days
in the Nullabor and the Franklin Valley.The Terrorist brochures Lie!
Also know there is no vehicle configuration which will optimise PV
exposure (due North azimuth). Solar saturation curves for vehicle
mounted PV are wholly subjective. Plan your system very astutely
and it will work, excellently!
Do not forget the water!
It is _very_ painful carting water, our Aussie legs were just not
evolved on mountain goat country! Investigate and power up a
name brand positive displacement submersible pump.
And do not forget the inline servicable filter/strainer!
Whether travelling in a sidecar or smoking your weed inside a
Winnebago you are going to need a _minimum_ of 3 (three)
batteries on board to "power up" - 12V or 240V.
Whatever it takes to start your vehicle _plus_ 2 (two) _minimum_
deep cycle wet-cell batteries.
And do not forget to vent these so you don't gas yourself or the
guy smoking next door. Butt flicks can prove very exciting.. kaB00M!
Finally, with an inverter on board the chassis of anything rubber tyred
you are going to experience "leakage". This can be as simple as stopping
your inverter from signaling switching correctly to blatant ELECTRIC SHOCK!!
Always "ground" the chassis when the inverter is being used.
A trailing chain will suffice in most instances, when parking up whilst
travelling, but for "stays" always drive an earth stake down at least
300mm(1foot) and wet the area. And, please.. don't puncture the parks 
sprinkler system!!!

oH.. and the fridge stays 0n, 24/7. Anything else is defeatist nonsense!

It is very easy to ruin a weekend or a whole life when rooting around
with electricity, ELV DC or "man's power", 240VAC, either has it's potential
dangers when not treated with respect. Pay attention to electrical requirements
and _that_ bogey man can stay in the background of your wanderings leaving
mobs of space to enjoy the trip.
Have fun!

gR