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When a manufacturer brags about their physical properties, but does not present any numbers, I wait for other news.
The toughness, however, will employ the usual Cook-Gordon (yes, Gordon the author) mechanism for crack stopping, also used by wood and teeth. As a crack tries to extend itself, the tip is trying to peel up as well as apart. The "peel-up" force is only 20% as strong, but if a resin-fiber interface is weaker than that, it will pop first, and blunt the crack. Once the matrix has been widely destroyed, the toughness of the fibers themselves comes into play.
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There is no excuse for a land vehicle to weigh more than its average payload.
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