A UK insurance company has created the Hornster bicycle, which has a whole bunch of horns that is capable of blasting out 178 decibels worth of honk. That's deafening!
How loud is that exactly? A jet aircraft taking off measures around 140-150 decibels. And in most scales, we've check that 178 decibels is definitely enough to cause instant hearing damage.
The horn itself is the same kind that is used by modern locomotives, and is powered by a full sized scuba tank integrated into the frame that makes the bike a little difficult to ride. And what's more it comes with a supposed price tag of just over $8,000. [ETA via Wired]