That’s really just improper etiquette.
We all know, or at least we all should know, that it is considered bad taste to show up the bride at her own wedding, or to do anything which takes attention away from her. Yet, even though the heavily modified Mark III Ford Cortina wedding car in the following video is doing exactly that, we’re still somehow okay with it. It might have something to do with our love of big clouds of tire smoke and noisy supercharged engines.
It is sort of a miracle that the driver doesn't manage to hit any parked cars, but then again, there might be a reason why it’s a fairly short video.