Looked around on google and here but i couldnt find any answers. They might be stupid questions and or asked before. If so, sorry...
Airports - Do sims actually travel from one city to another on these or do these planes just go threw some dimensional warp?
Waste to energy plant - Does it burn trash from your landfill or just new trash? Maybe both?
High schools - Is it just me or are most sims post elementary school drop outs? How do i get more high school students?
Water treatment plant - I am not getting any results from these. I've put them in the center of water polluted areas.
Non-lot question
Ferries, Subways, Trains, and Buses - Will they only travel to bordering tiles or any tile as long as there is a passable route?