Truck City v0.39-Demo has just been released. This is the change log:
Feature: trucks can be configured so they pick up only some container types, instead of all
Feature: clicking on the bottom right color band in the truck menu allows changing the truck's color
Feature: clicking on the calendar icon at the top-right will show the leaderboard for the current map
Balance: production rate decreased for stone mines and stone processing factories (cement factory and rock crusher)
Improvement: container colors adjusted to make them more clearly different
Improvement: some minor tile fixes in the DEMO mission map
Improvement: translations improved for market menu
Bugfix: fixed corner case where research center may stall