What a gorgeous little camper van!
 

This link won't enable anyone to do any overlanding, but I just thought it was so dinky it was too good to not look at :)

The Inside Of This Micro RV From Japan Doesn't Look Like You'd Expect

Looks like a lot of wood and little padding for a comfy night's sleep ... looks like the build quality might be better than the English equivalent :)

I'd guess that it would actually be a viable option, depending of course on what is meant by "overlanding".

The approach, breakover, and departure angles don't look that bad (the departure looks good. the approach is probably the limiting factor), the ground clearance is only 17 cm however this is the same as a Tucson which we've found can handle most of the F roads in Iceland. It's 4x4.

Obviously it's not a vehicle to cross the Simpson Desert (from the ground clearance perspective) however I'd be confident to drive from Nairobi to Cape Town in it, with the ability to get into most of the national parks, albeit not "off road" as such.

PS: it's a sixteenth of the price of an Earthcruiser!