The Bicycle Bus of the PNW Coast was around well past the 1970s. Here's a view from 1999 on the Oregon coast - riding from Seattle to LA solo, I'd just broken two spokes, determined the nearest bike shop was 20 miles away and closed on Sundays, so I started looking for a place to spend the night. Turned the corner, and saw this:
The Bicycle Bus by
joshua_putnam, on Flickr