Bit random and I’m sure i’ll get told, wrong section! I have a old Tomtom from before I could afford integrated navigation! Just had an email telling me about GPS Week Number Rollover (WNRO) and that it occurs every 19 years, with the next roll over taking place soon. I’ve never heard of this and it’s a bit late for April fools! But to be fair I didnt have navigation 19 years ago. Anyways, to the point, will this affect our cars with built-in Nav?? I’m guessing it’s a software thing, so ours would update automatically perhaps?