What you’re describing is a Battery Management System (BMS), whose job is to monitor some key parameters of the cells and make sure they remain balanced. There’s no intrinsic reason for it to be tightly integrated into an overarching system that performs surveillance or other high-level functions in a “smart” vehicle. This video by Great Scott explains the basic principles and he even builds a simple one from scratch, that would be suitable for something like an e-bike www.youtube.com/watch?v=rT-1gvkFj60

Sufficiently motivated people have been building highly performant DIY electric cars for several years with no Big Brother tech in the OpenInverter community openinverter.org/wiki/Main_Page