I always found logistics interesting. Moving stuff around efficiently seems to be a real art. Many opportunities to use data. We use a few different logistics companies and I kick around the idea of bringing it in house sometimes.
The catch seems to be managing all the different data that isn't comparable, but should be.
Like every logistics organization does something some weird way (carrier, client, end customer, everyone's accounting...), they're sure it is the right way, and then the next one does it the "right way" another way and now nothing is a 1:1 ;)
Lots of old / skewed / strange practices that requires a lot of unexpected maintenance / changes. It's easy to end up swimming in a lot of bad / not equivalent data.