about as close as people have gotten to becoming wheeled centaurs: South Africa's stance bikes and spinning

skip to 3:35 

https://2summers.net/2022/09/08/spinning-bicycles-in-soweto/
https://www.core77.com/posts/116911/Modified-Bicycles-Used-for-Street-Spinning

if this seems like a strange thing, tell me why the hell anyone rides a unicycle