But the days of a conductor yelling “All aboard!” in Mount Dora are numbered. The nearly 5-mile route between Tavares and Mount Dora is ending after about 1½ years — in the latest incarnation of a tourist train here — because keeping the tracks in shape for passenger service has become too pricey. Tracks laid more than 100 years ago would require a multimillion-dollar upgrade that Florida Central Railroad has no plans of funding.