An LRT to Scarborough Town Centre would have taken 4 years to construct; the subway extension, 9 years to finish the design and build. (I doubt the subway extension will be done by 2025, more likely 2026.) The LRT was shovel-ready; we have already spent 3+ years trying to design the subway extension, and the design does not seem to be quite ready. Patience, as well as money, is required for subway extensions.