Over these 8 years we been getting more diesel engines with the same basis and so far the last one is literally Sidney, honestly I thought he would be the next engine produced along with Red Rosie but no they decided to make one character at a time which disappoints me. I really hope he gets made next, cause if it doesn't happen then I'm gonna regret it for the rest of my life. Anyways feel free to discuss this topic on what you think.