這垃圾車bug在4.0竟然還沒有修正，還是等5.0出來再玩好了

Garbage Trucks and Recycling Trucks: Fixed an issue that some cities experienced where garbage and recycling trucks do not leave their buildings or disappeared when trading service with neighbors. Existing cities who have trucks that have disappeared will have to demolish their missing trucks’ garages and plop new garages.