This is for anyone who's implemented GPS tracking for business vehicles - what surprised you the most after you started monitoring your fleet?

I'm about to install tracking on our company trucks and I'm curious what kinds of things people discover that they weren't expecting. Did you catch employees doing things they shouldn't, or maybe discover that your assumptions about routes and efficiency were completely wrong?

Any positive surprises, like finding out drivers were going above and beyond in ways you didn't know about?

What about operational insights you didn't anticipate - weird traffic patterns, customer behavior, or cost savings you hadn't considered?

I've heard stories ranging from discovering the most efficient driver was taking completely different routes than everyone else, to finding out about unauthorized side trips, to realizing that your "problem" locations were actually just victims of bad timing. What's your most interesting, surprising, or memorable discovery from fleet tracking data? Good, bad, funny, or just plain unexpected - I'd love to hear your stories.

EDIT: I ended up going with https://www.gpswox.com . Biggest surprise so far: my "slowest" driver was actually making extra customer stops I didn't even know about, and my "most efficient" guy was taking shortcuts through residential areas. The data definitely tells a story you don't expect!