Does a Testimonial Carousel exist?

Does a testimonial carousel for the home page exist?

All of the testimonial extensions I see are designed to collect customer feedback, and then display only one. Given the typical customer objection to my product, an endorsement by another typical customer won't help. However, endorsements by "recognized authorities" are helpful, and I am already getting lots of those with the product being less than a month old. I would like to display these "authority endorsements" at the bottom of my home page, and rotate them via fade, or carousel, or whatever. A "click to read more" function would be nice, but is not required.

Searching for "testimonial" extensions didn't turn up anything that does what I am asking, but maybe I missed something. Does anyone know if what I am looking for exists?

I am currently using the Welcome extension for my home page, but I could change that if necessary.