NO Way
By car the distance is 3 210 km from Falkirk to Bucharest.
the Caledonia sleeper train goes south from Glasgow and you sleep in it
There is a train at noon from Kings Cross that arrives in Falkirk at 1704 so that takes 5 hours and 4 minutes.
A sleeper railway carriage (or a sleeper, a rail sleeper, a sleeper car).
Bogie berth sleeper compartment
The last normal train from Waverley is at 1900 but there is a sleeper that leaves at 2340.
The sleeper car allowed people to travel great distances on a train in comfort. They could sleep and rest in the sleeper and arrive at their destination rested.
About 5h05 (including a change at London).
According to 'thetrainline' website - the route would take a total of 28 hour excluding waiting time between trains...It's a 5 hour 30 minute train journey from Falkirk to London Euston.6 hours 30 minutes from Paris to Lyon14:00 hours from Lyon to Bucharest
Unfortunately there are no longer any sleeper trains from Switzerland to Italy. You need to take a day train, and probably change in Milan.
The Caledonian Sleeper is a sleeper train operated by First ScotRail. It is one of only two on the British railway network, the other being the Night Riviera.
The options for a sleeping place in a train typically include seats that recline, bunk beds in shared compartments, or private sleeper cabins with beds.