Once Bitten Posted May 9, 2018 Share Posted May 9, 2018 I'm not really up to date on motoring gadgets , so can some one please explain why I keep seeing more and more cars with some sort of round tube running across the vehicles back window, and what are the small round holes drilled into the car rear bumper for ? , and do I need to have them on my car . Link to comment Share on other sites More sharing options...
Jeremia Juxtaposed Posted May 9, 2018 Share Posted May 9, 2018 The holes at the bottom are for firing smoke canisters and mini torpedos from. The thin strip produces an invisible force field to prevent damage to the car if somebody decides to jump out of a high rise building above the car 1 Link to comment Share on other sites More sharing options...
evadgib Posted May 9, 2018 Share Posted May 9, 2018 A friend refused to accept his car back from the workshop until the sensors in these had been repaired after he had been rear ended. I cannot remember exactly what they were for but it's presumably safety related. Link to comment Share on other sites More sharing options...
tifino Posted May 9, 2018 Share Posted May 9, 2018 Probably a stack of 'passive' road rage stuff: The window super bight led light bars specifically placed in the line of sight to blind the drivers behind. The bumper holes good for placing quad pairs of more blinding lights. Link to comment Share on other sites More sharing options...
Damrongsak Posted May 9, 2018 Share Posted May 9, 2018 Google "rear bumper diffuser holes". Also called speed holes. Makes a little riceburner car go faster. Link to comment Share on other sites More sharing options...
hkt83100 Posted May 10, 2018 Share Posted May 10, 2018 About as useful as this. Very popular in the eighties in Germany. Link to comment Share on other sites More sharing options...
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