Downhill charging rate
What is the best drive mode to maximize the charge rate when going downhill?
I'm sure numerous seat-of-the-pants studies have been done on this subject, but I cannot find any.
I once got about 12 miles of battery charge on I-405 (Los Angeles - Cahuenga Pass) going from I-101 south to I-10. I was in D, and coasting in the outside lane quite a bit just to maximize the charging.
Thanks for your input.