Tests undertaken to prove the benefits of puncture proof tyres.
Puncture proof tyre. Documentary states it seals its own punctures, part of the secret of the tyre developed by Goodrich is a gummy inner lining which sticks to anything which punctures it. When the glass or nail is removed they pull the gummy lining into the hole and seal it.
M.S. Man shovelling broken glass etc., over road as car approaches. CU. Angle shot wheel of car passing over broken glass. CU. Man banging nail in tyre. CU. Girl pan down to tyre. CU. Man pulling 6in. nail out of tyre. SV. Towards car driving over nailed board. CU. Tyre going over nails, and CU.