The 60' in-bay is a long-bay or tandem in-bay automatic (no conveyor), priced as a full build with a smaller building, 6 vac stalls and a smaller lot; its numbers are a Curtis estimate from industry sources. Every tunnel size is priced as a full express build: building, tunnel equipment with pay stations, controls and water reclaim, vacuum stalls with canopy, sitework and signage, and permits/soft costs. Land excluded. Traffic and population thresholds are a Curtis planning rule built from industry sources, not a published standard — calibrate with real Cowboy Express data.