John Williamson writes:

And biodegradable plastic made from corn starch for the chassis. I
wonder how long it'll be before it proves that it *is* biodegradable?

A hotel stay in the US a few years ago left me with a supply of small
"biodegradable" cornstarch plastic bottles. One's spent the last year
outside in the sun and rain on my balcony, and so far shows no visible
sign of degrading.

--
Adam Sampson http://offog.org/