C|Net has a pictorial on concept cars commissioned by Peugeot. The text for this one says "[...] including the drum [rear] wheel that was designed for stability."

Except that it seems to me that drum rear wheel will not only reduce stability on all but perfectly smooth and level surfaces, it'll make the rear end of this car horribly prone to hydroplaning. Building (and buying) tires for it is going to be a bitch, too.
There are concepts in this pictorial that I find somewhat intriguing, such as #6, the variable-geometry Peugeot 888. This is not one of them. And concept #9, the Opena, is just silly. What was he thinking?
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For the one you showed, #10, I thought "if they split the 1 wide rear wheel into 2 conventional wheels, maybe it'd work", but that's almost what the #6 is. That is, assuming #10's shoulders and hips flex into a similar configuration as the "in the city" configuration of the #6. If not, then the #10 has no value at all to me ;-) (even if you fix the rear wheel).
There were a couple others that seemed sort of interesting (#11 might be nice ... if it had doors). But I really like #6.