Some are for high speed trains and some are for trains that carry goods in a secured way. You need to use tools like nostr:nprofile1qqsqcdcltmv4qanpx3p7svcufdsg9rkk00x7l2sknra4e6whkv59l7cppemhxue69uhkummn9ekx7mp0qythwumn8ghj7un9d3shjtnswf5k6ctv9ehx2ap0qywhwumn8ghj7mn0wd68ytnzd96xxmmfdejhytnnda3kjctv9uke3478 or nostr:nprofile1qqsza56ed667de7q6mu6uxspetg7gzadqtkeug3plserzcj2nz6vc7qpzamhxue69uhhyetvv9ujumn0wd68ytnzv9hxgtcphqc4p in order to tranfer bitcoin from one track to another.

Quick explanation and he got it right away. 🤔😏 No need to explain all the LN nuances.