I wonder if electric starters killed the pedals. I grew up in an area that was pretty heavily car-centric, so we didn't see a lot of alternatives. The Schwinn store got the Solex Horse, which had pedals, but they were really only useful for starting as there was one gear with a low ratio.

The only next thing we saw was the Honda Spree, which as I recall had an electric starter and whatever qualified as an "automatic transmission," and I think that class of scooter is still more or less the standard today. It seemed like a big step forward in terms of ease of use.