You can't buy them, only lease them.
If they went bust, in all likelihood another company would take over the contract. If no rescue was forthcoming, you'd either end up with a car for free or it would be repossessed by the liquidators. Either way, you lose nothing.
Damned ugly looking thing though, and I doubt if it passes the compulsory safety crash tests. Modern cars are so heavy in part because of the impact protection.
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