> When you're done you smash the cup on the road when you're done.

Why would you ever want to encourage people to litter. We need to encourage people to be responsible and dispose of their waste correctly.

You act like I invented the custom. I don't encourage or condone littering but if you've even glanced at the pages from the links it indirectly addresses that.

Also it's much better than the alternative of non-biodegradable plastics.

> Because the shards were unglazed, the cup would simply dissolve over time in the rain and sun, and from the friction of peoples feet walking over it

> No one know how long the tradition of environmentally friendly clay cups can resist the onslaught of cheap plastic.

> But plastic [is] rapidly replac[ing] the clay.

> You act like I invented the custom

I think you've misunderstood, it was I don't think there should be a product which encourages littering. We have paper plates, paper bags, paper napkins which when littered will 'vanish' in probably a few weeks. They are still a litter problem even though they eventually disappear.

Clay is a non-renewable resource.

Clay itself is essentially unlimited... there’s so much of it and it’s constantly being reformed (although on a much slower time scale than, say, wood). However the energy used to fire it might be more of a problem.