This 2006 International Harvester 7400 4×4 seems to have been converted into a very expensive and high end expedition type camper from new. Now offered with about 40k miles accumulated under one owner, it’s safe to say it’s been around the world but still looks to be in fantastic shape. The ad describes it as both proven and well-maintained, and with a 1,600 mile range from twin 100 gallon tanks, it’s probably only been filled-up a few dozen times. Find it here on Unicat in Dettenheim, Germany for $500k. Special thanks to BaT reader IgnatiusReilly for this submission.

Eight miles per gallon at a steady 60 MPH isn’t bad for a 16.5 ton truck. Power comes from a 310 horse, 950 lb. ft. International turbodiesel running through a 6-speed Allison close-ratio gearbox and 2-speed transfer case with PTO hookups. The spec list is both massive and very impressive–it’s easily worth the five minutes or so it takes to read through.

Construction quality looks and sounds to be absolutely top-notch. A few highlights include twin roof-mounted electrics A/C units, warm water heat, solar panels, generators, a full kitchen and bathroom with shower and reconfigurable seating and bedding for four. Though far from large, accommodations are surprisingly luxurious and spacious–note the small apartment sized fridge and suspended queen bed, for example.

Here’s the view forward into the four seater, separately suspended cab. Leather seats, power windows and locks and lots of gauges, switches and GPS/navigation equipment can also be seen in more detailed cabin photos within the ad. The dining room seen here has a multi-adjustable table and can be reconfigured into additional bedding. Note the separate Alpine sound system located underneath the right side bench cushion,

Here’s an expanded view. Many other photos show the exterior, cab and living quarters in greater detail. Half a million bucks is a lot of cash, but considering the build and maintenance costs for this thing almost certainly double if not triple that figure it’s easy to understand why it’s priced as such. We see similar rigs packed full of globe-trekking European families out here in California from time-to-time, and are always struck by how amazing it would be to do the same–sadly this one’s not our adventure.