Originally Posted by 
JDNSW
				 
			I have no experience of the GS, but the D Series, having a strong weight bias onto the front wheels, has no issues running with a rear wheel off. 
They have a few other interesting features - during late production of them, an advertisement showed one driving at 100kph over a spike to blow a front tyre, followed by an emergency stop in a straight line - with hands off the steering wheel. This is possible because there is no king pin inclination. Front suspension is by equal length wishbones - except they are not wishbones, but forged steel L-shapes, running in taper roller bearings not rubber. Springs are self  levelling hydraulic cylinders operating a very high pressure, with springing provided by hydraulic accumulators on each wheel. The proportion of braking is distributed between front and rear by the relative suspension pressures, and the brakes are power - not power assist. The brake pedal has almost no movement, but is pressure sensitive. Front brakes are inboard discs. Hydraulic pressure for suspension, steering and brakes (and originally clutch and gearshift) is from an engine driven pump, with a hydraulic accumulator to provide braking backup. 
This hit the market in 1955. And was assembled in Australia in the 1960s! For perspective, The first DS was contemporary with the FJ Holden, basically a prewar Chevrolet, differing only in its unitary construction, but otherwise similar to most prewar American cars.