Thank you tons for the feedback. I added some tooltips and tried to clarify some of the upgrades.
I 100% agree the pacing needs some work since you get to a point where you don't need certain upgrades anymore, I may try to work on this for a future update to see what I can do.
I looked into the automated trucks 'delivering odd and low quantities of milk' and fixed a bug which may have caused this, the page should have the fix now. (All automated trucks used the regular milk amount, instead of their correct type.)
Thank you again for the feedback and bug report it is very much appreciated.