Xynaptic Intermodal Compare — train vs plane between two cities: REAL next train...
https://api.xynaptic.io/v1/rail-intermodal-compareOverview
Xynaptic Intermodal Compare — train vs plane between two cities: REAL next train journeys (Navitia/SNCF: times, duration, transfers) vs flight estimate (great-circle distance, typical duration+price range, CO2 per passenger). Composite verdict: when the train wins on total door-to-door time or cost. GET ?from=Paris&to=Nice. France focus. Informational.