> It depends on the material. If they are flexible, and deform easily, a lot of energy would be converted into structural damage, I would presume. At those spe

> It depends on the material. If they are flexible, and deform easily, a lot of energy would be converted into structural damage, I would presume. At those speeds, everything is "flexible" in the sense that even metal just flows in a fluid-like manner (see picture linked in the comment). Also, the material would have to somehow convert the energy of an entire car crashing into it at full speed. Except the car is only an inch wide.