Videos and images showing huge bubbles on cars are likely a load of hot air... er, actually, compressed air!
Remember being told that the internet would make our lives easier? I’m going to put on my Maury Povich mask to say the lie detector test determined that was a lie. Now we’re all infinitely connected and constantly contactable by virtually anyone, and deceitful folks can intentionally sensationalize things online to exploit popularity. If you’ve seen the recent viral footage of “pregnant” cars with giant inflated bubbles in China, then you’ve likely fallen prey to a sensationalized fallacy.
The internet has served as a superspreader of misinformation for decades now, but we’re just beginning to understand the impact that artificial intelligence has on this misinformation, but that still doesn’t explain why all these cars are doing their best beluga whale impressions. Wrapping cars has become a more affordable and less permanent alternative to repainting a car, and it involves precisely sticking sheets of colored vinyl to the body of a car. While it is possible for air bubbles to remain underneath the wrap after installation, they’re never this large and they wouldn’t unintentionally get this large just by sitting in the heat. The Autopian did the math and discovered,
Imagine that a whole quart (~0.94 L) of air was trapped underneath the vinyl wrap on the hood of one of these vehicles. That would be a sizeable bulge that you could never miss on sight. Nobody would accept a wrap with a bubble that big, but let’s be generous in our calculations. Imagine that air bubble was there when the vinyl was installed at a temperature of 68 F (20 C). If you then took that car outside on a hot day of 104 F (40 C), the air would expand. By how much? Only a disappointing 7%! Your quart-sized bubble would now be 1.068 quarts (1.004 L) in volume assuming the same atmospheric pressure.
Meanwhile, the bubbles we’re seeing are many gallons in size. That doesn’t check out. Basically, there’s no way heat alone could have caused these bulges. Air simply doesn’t expand enough to generate such extreme results…
There is one thing, however, that generates bubbles in vinyl wraps exactly like these ones. Compressed air! In fact, blowing air under a vinyl wrap is a pretty common way to remove it. The typical technique involves inserting a compressed air nozzle under the corner of the wrap and inflating it to lift the wrap up from the hood. Head over to one of the many discussions on Reddit $RDDT, and you’ll find a bunch of commenters from the vinyl industry saying just that.
The exaggerated bubbles shown in the original video are not feasibly possible just from high heat or humidity. One of the most effective ways to remove a wrap from a car is by shooting compressed air between the adhesive wrap and the car’s actual paint, which is the most likely explanation for the massive bubbles. This is definitely not a build quality issue with Chinese cars, as many tweets claim, especially since of the swollen cars two are German Audi A3-based cars and one is a German Audi A6.
Don’t believe everything you see on the internet kids!
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