The problem with this sort of software is two-fold. First, if the target customer is public money (ie govt at dome level) then you run into procurement layers.

The problem with this sort of software is two-fold. First, if the target customer is public money (ie govt at dome level) then you run into procurement layers. Unlike business govt can't just have sn opionion on the best solution and buy that. Specs have to be written, tenders awarded, qualifications checked. It's far from a simple process. The second hurdle is that, it's immediate scale. It's an all or nothing solution. All the bits need to work flawlessly, at significant scale, with custom hardware, in various locations (or worse, in this case, moving vehicles. ) All with unreliable connectivity. It's a large, complex system with a million edge cases. The programming part is easy, it's the rest of everything that kills you. Yes, projects like this are possible. But they are wicked expensive to pull off, and require an exhaustive specification, and a very long buying process.