2:29 Well if that little car could be considered as the ROADU RORAAA then the guy in blue should be Jotaro. But since they're kids, then yes, Dio was bullying Jonathan that way when they were young.
3:27 this doesn't really fit with josuke and koichi but it would fit with Joseph and ceasar. (I'm not judging I'm just saying it would fit better with them)