1. There weren't any seats in the KTX.
2. There weren't any seats on the KTX.
-------------------------------------
Do we have to use 'in' or 'on' in this sentence? [The KTX is a train which goes faster.]
2. There weren't any seats on the KTX.
-------------------------------------
Do we have to use 'in' or 'on' in this sentence? [The KTX is a train which goes faster.]