In chase scenes, there comes a time when the trailer of a Mack blocks the driver's path. And, there isn't time to avoid a collision. What does one do?

Answer: DUCK.

If the car is low enough and/or the trailer high enough, most of the car will pass under it safely. Except the roof and windows. The car is perfectly drivable afterward. The driver may even remark, "I've always wanted a convertible." Hence, the name of the trope.

The ''Series/{{Mythbusters}}'' show this trope is {{Truth in Television}}: their tow cable-guided test car kept going until it left the test site and crashed into a ravine. A SubTrope of LowClearance.
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!!Examples

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[[folder:Anime & Manga]]
* In ''SoulEater'' [[TheDragon Giriko]] complains the limousine Arachne's Butler arranged to pick them up with after she was resurrected was too cramped and invoked this trope while it was still stationary. Being an AxCrazy guy [[EquippableAlly with the ability]] to turn into a [[ChainsawGood chainsaw]] does that.
* In ''{{Durarara}}'', Shizuo pulls this off on [[spoiler:Horada]]'s car by slicing the top off with a highway sign.
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[[folder:Films -- Live Action]]
* ''Film/JamesBond''
** 007 shears the top off a doubledecker bus by going under a low bridge in ''Film/{{Live and Let Die}}''.
** This is one of many mishaps that happens to Bond's Renault in ''Film/{{A View to a Kill}}''.
* The long chase scene in ''The Seven Ups'' ends with one of these. Only the front half of Roy Scheider's car gets sliced off, though.
* In ''TheToxicAvenger Part 2'', during the final chase scene Toxi's cab driver is unable to avoid this fate. After a moment of silence, everyone in the cab freaks out and when the driver starts ranting about how his cab's been ruined, Toxi tells him to chill out 'cause he now has a convertible and hands him a pair of sunglasses (and he does!). Oddly enough, the little Jesus statue in the back is unharmed.
* In ''Film/TheMummyReturns'' they do this to the second floor of a double decker bus.
* Happens to a police car in the live-action [[WaltDisney Disney]] comedy ''No Deposit, No Return''.
* ''{{Terminator}}''
** ''Terminator 2'': When the T-1000, driving a semi, crashes into a demolished bridge, destroying the roof of the truck, the T-1000, being made of liquid metal, is able to reconstruct itself and continue the chase.
** ''{{Terminator}} 3'' does this with a hearse, badly damaging the terminator trying to cut though the roof in the process.
* Averted in ''Film/AClockworkOrange''. They're already ''in'' a convertible, and it suffers no damage whatsoever when it goes under a truck.
* In ''{{Smokey and the Bandit}}'', Sheriff Buford T. Justice has this happen to him when he can't avoid a truck carrying a concrete I-beam. He continues to drive the roofless police cruiser at high speed across several states for the rest of the movie.
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[[folder:Live-Action TV]]
* This happens in the final episode of ''Series/PerfectStrangers''.
* It happens to Rosco's cruiser in an episode of ''Series/TheDukesOfHazzard''.
* It happens in ''Series/TopGear'' with a Citroen sedan driven by The Stig as part of a test on vehicle height in sports cars (it failed).
* Mr. Lahey's car in ''Series/TrailerParkBoys''.
* Averted in the ''Series/{{Bugs}}'' episode "All Under Control". The villain attempts to drive under a truck, only for the car to come to a complete stop.
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[[folder:Western Animation]]
* Happened in an episode of ''MegasXLR'' when Coop was taking a driving test at the DMV.
* Slight variation in an episode of ''GarfieldAndFriends'' when Jon drives under a billboard and Garfield makes the comment.
* Variation in the '90s ''WesternAnimation/{{X-Men}}'' animated series, when Cyclops pisses off {{Wolverine}}.
-->'''Wolverine:''' Tell Cyclops I made him a convertible.
* In one episode of ''WesternAnimation/ExtremeGhostbusters'', the gang is being chased by the metal-eating JerseyDevil, who blasts the roof of Roland's car. Eduardo then makes the comment.
* In the ''WesternAnimation/AmericanDad'' episode "Dungeons and Wagons", when Stan, Francine, and Roger are fleeing the street racing kidnappers, Roger dumps everything to reduce the car's weight leading to one of the kidnappers driving under the tanker truck and becoming a convertible.
* Happens to Cruella DeVil's car at the end of ''Disney/OneHundredAndOneDalmatians'', while she is chasing the moving van the titular dogs were travelling in.
** Her car was ''already'' a convertible, though the top was up at the time.
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[[folder:Real Life]]
* The Double-Decker Bus vs Low Bridge variant happens frequently in Britain.
* There is a bridge in the United States called the 11 foot 8 Bridge, a railroad bridge with a less than 12 foot height clearance over a street. Tall trucks frequently fail to take heed of the big yellow warning signs, and the roofs get sheered off in spectacular fashion. There are two cameras at this intersection that capture every instance of this to YouTube. And this happens at least twelve to sixteen times a year. There is even [[http://11foot8.com/ a website]] dedicated to the videos of these crashes.
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