Researchers in Germany are developing a system for cars to anticipate side-impact crashes and then actually change shape to reinforce the frame just before the moment of impact. Using cameras mounted on the front and back of the car, an onboard computer would calculate the chances of an impact. If a crash looks imminent, the bond between door and frame would become stronger using a heat-activated, shape-shifting metal. The stronger bond helps distribute the impact around the entire frame, making it much safer inside the car. Of course, this begs the question of why they don't make that bond stronger in the first place, but I assume they know what they're talking about. The technology is still in development, but they expect it to be in crash tests around 2008. Until then, try not to let anyone sideswipe you, okay?