I like Mark Twain. When I was very young I remember my Mom read me The Adventures of Huckleberry Finn. Later in high school A Connecticut Yankee in King Arthur's Court became my favorite Mark Twain book. As I have gotten older I have come to appreciate Twain's satirical style and wry sense of humor. I think he would fit right in today as an author.
I never knew he rode a bike until I read a short essay Twain wrote about learning to ride a Pennyfarthing. I found the piece at http://www.bikereader.com/BikeReader.html an interesting website that collects bike related literature. Read the essay here: http://www.bikereader.com/contributors/misc/taming.html#top
Here is a drawing of a Pennyfarthing or Highwheeler to help with the comic effect.