Crash-resistant motor-vehicle fuel-line tubing

In a motor-vehicle having a fuel tank, an engine, and a fuel-line tube connected between the tank and the engine, the improvements wherein:

• the tube is formed wholly of plastic;
• the tube has ends provided with fittings connecting it to the engine and tank and capable of resisting disconnection from the tube and tank when stressed at less than a predetermined pullout force;
• the tube has an outside diameter of less than 15 mm;
• and
• the tube has a corrugated crash-resistant section of a predetermined length which is a maximum of 50% of a precorrugated length and capable of elongation in response to a crash with a tensile force smaller than the pullout force.