Welcome to the forum, Wayne (@Be-Idle-Free)! Nice story about how you got interested in green driving.
I hope you're right--tech that obviates idling would be great. And to take that further, I hope that at some point in the near future, we figure out a way to travel that's truly zero or near-zero emissions.
There are signs on the Hawthorne Bridge, which connects SE Portland with SW Portland by spanning the Willamette River, advising drivers to turn off their engines when waiting for the drawbridge.