Question about how the trains work... I have a black engine and a red engine .. red hooked up to 12 cars ... so i need to buy 8 cars ... place 10 on each to red and black engine, after i do ... do i need to send them out at the same time for it to work the refers clients ... because black is 7 days red 6 days after boost 6 day 5 days... or as long as they are out it works and it doesn't matter..or do you have to buy another engine of the same for it to work. boy i hope i explain this right.. thanks
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