What does breaking the sound barrier cause?

More Questions:

How many different car models were there in the first Hot Wheels release in 1968?

What is added to a Cosmopolitan martini to make it pink?

A spice from which root is used to give food a yellow colour?

What do weather watchers use to measure relative humidity?

When is Cinderella required to leave the ball?

Whose girlfriends are named Callie Shaw and Iola Morton?

What does Miss Havisham constantly wear in Dickens" "Great Expectations"?

What year did Pinocchio first appear in published media?

What London street is home to a famous theater and, in a children's song, to "the Muffin Man"?

What name is shared by the rivers that run through Denison, Texas and Hanoi, Vietnam?

What athlete had a part in the movie "Mitchell"?

Who is Bugs Bunny's archenemy?

Which famous actress was born Vera Jane Palmer?

Why did people go to Sutter's Mill, California, from 1848 to the mid 1850's?

What is the first name of the fictional character "Miss Marple"?