Tomorrow: My White Bicycle
In 1966 the Dutch countercultural group Provo came up with a radical idea of scattering bicycles throughout Amsterdam for city residents to use whenever they needed. To make them easy to identify (and to prevent people from keeping them), they were painted white.
Tomorrow's "My White Bicycle" was apparently inspired by that program, but given the year (1967) and the genre (psychedelic pop), I'm betting that the title of the song is also a sly reference to LSD inventor Albert Hofmann's famous bicycle ride home from work after becoming the first person to ingest the psychedelic drug in 1943.
Tomorrow give the song an appropriately dizzy production, with backwards instruments, droning bass, sound effects, heavy panning, etc.
At the time, they were seen as psychedelic innovators. But they only managed to release one album, and now they are a a rock history footnote, known mostly for guitarist Steve Howe, who went on to make his name as a member of progressive rock band Yes.