Is emptying a cup of soda (with ice) onto the road dangerous?

Heated conversation on the way home yesterday. (Weather was cloudy and about 60 degrees)

I had about half a cup of soda (still with ice in it) in a plastic cup in the car. I had already imbibed too much of it, my bladder was full, and I had no intention of drinking any more of it.

So I opened the car window (actually I was stopped at a stop sign when I did this), and poured out the soda, ice and all. I retained the plastic cup in the car – I’m not about to litter. And then I accelerated.

My passenger ripped into me, saying “someone could slide on that ice. What you did was dangerous to the next drive behind you”

My answer was “this was a 1 foot by 1 foot patch of liquid and ice which is going to melt/dry in a matter of 10 minutes” and “even if one wheel slid on the soda and the ice, there are three other wheels that were hugging the road”.

My feeling is that there was no danger, no harm.

What is the collective feeling of Flutherdom? Danger or No Danger?