The trio of Range Rover Hybrid prototypes participating in the Silk Trail expedition have now passed through seven European countries in twelve days covering 2,770 miles.

Since the afternoon of Thursday 22 August, the convoy has headed south through the UK, east through France, Belgium, the Netherlands, and Germany, and south-east through Poland and the Ukraine.

This expedition will visit 12 countries and takes in some of the world’s most challenging roads, passes and trails, including part of the ancient, 4,000 mile Silk Road connecting Asia with the Mediterranean. These are the first hybrids ever to attempt this route.

This first section was always expected to be the most straightforward part of an otherwise ambitious journey. The toughest challenges still lie ahead.

Even so, the route has already presented the vehicles with the stresses of urban congestion, the hazards of some poorly maintained former Eastern Bloc roads and the first of many official border-crossings.

At urban speeds the Hybrids’ 35kW (47 bhp) electric motors automatically take over from the V6 diesel engine to reduce fuel consumption and emissions.

Even fully laden – roof racks, load spaces and rear seats piled high with heavy expedition gear – air suspension ensures an even ride.

But the Range Rovers’ comfort and luxury does not compromise its ability to tackle tough roads.

After all, this is what the Range Rover is designed for.

And to have some fun.

With most of the urban journey over for now, the expedition is now poised to enter Russia, where it will spend the next six days before crossing the border into Kazakhstan.

Five countries and 41 days to go on a marathon 9,950 mile endurance drive.