Did another test on Saturday evening. This time to a less densely populated area (Banting), in the middle of the FMCO, fewer cars & people around and also quite late in the day, lagi fewer people.

6:50pm - Started off in Sg Long. Already quite deserted at this time. I got this at 7:28pm. My daughter was manning the Mac at home tracking me. This was the first update that she received and it was quite delayed.

7:37pm - Update received 7:41pm. All updates came in 5-20 mins late. Already in Banting. No updates on the highway at all unlike the other day where I had an update while cruising on the NPE.

7:49pm

8:02pm

8:42pm The last 3, I was already at my destination. Forgot to check if the person I was meeting with had an iPhone.

8:46pm - Update received 9:25pm, almost 40 mins later. Driving out of Banting.
No more updates until I reached home at 9:41pm.
There were rumours that Apple had the AirTag ready for a 2020 launch but postponed it to 2021. Maybe this is why. It wouldn't have worked nearly as well in the middle of America's lockdown.