Using Bikes For Something Else

Each of these bicycles has special meaning.  The owners of these bikes used them to make a statement.  Take a guess and tell us the story behind these bikes.

QUESTION 1.  Is this one serious about sound?

QUESTION 2.  Does this one involve some religious experience?

QUESTION 3.  How does this one reflect the owner’s lifestyle choices.

BONUS QUESTION:  How is this one about making good use of stuff?