I took a $185 lie-flat overnight bus across Europe instead of the train. It was slower - but I slept better.
Twiliner, a Swiss startup, operates luxury overnight buses with lie-flat beds across European routes, offering comfortable long-distance travel as an alternative to traditional buses and trains.
Butterfly Seating brings flexible coach sleeper seat to Europe... starting from Busworld - Sustainable Bus
A convertible seating system transforms premium recliners into a private lounge or 78-inch lie-flat bed in under 10 seconds, enabling multiple service profiles per vehicle.