What are the stunts of a new generation of low-floor city buses? What are the stunts of a new generation of low-floor city buses? What are the stunts of a new generation of low-floor city buses? What are the stunts of a new generation of low-floor city buses? What are the stunts of a new generation of low-floor city buses? What are the stunts of a new generation of low-floor city buses? What are the stunts of a new generation of low-floor city buses? What are the stunts of a new generation of low-floor city buses?