Blowout into Leak

Over the icy concrete runways of Brooklyn's Floyd Bennett Field one day last week streaked a shiny new sedan with a professional "hell driver" at the wheel. While police and safety officials held their breath the car hurtled over six-inch railroad spikes at 60 m.p.h., had its rear tires slashed by automatic knives. What made the demonstration remarkable was that after the blowouts the car did not swerve dangerously but was brought safely to a stop under full control.

Thus did potent Goodyear Tire & Rubber Co. show that its new "Lifeguard Tube" had beaten the No. 1 bugaboo of U. S. motorists--the danger of loss of control following a blowout at high speed. The new tube is really a double tube, one inside the other. The inside tube or "lung," made of two-ply fabric, floats free under normal riding conditions, has a single small vent through which air escapes slowly when a blowout bursts the outer tube. Thus, it converts the blow-out into a slow leak, allows the driver to continue a mile or more with safety. Chief reason for the venthole: it permits equalized inflation of the two tubes.

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