Hey Scott - I see that and have read what it says for drive time default mode (see below)...but whenever I open Power BI and it enables to ESRI, the drive time of 10 minutes is always the same area...so my guess is that it's static and doesn't change each time i open it...Is it safe to assume it is calculated on an average for the area???
Models the movement of cars and other similar small automobiles, such as pickup trucks, and finds solutions that optimize travel time. Travel obeys one-way roads, avoids illegal turns, and follows other rules that are specific to cars. When you specify a start time, dynamic travel speeds based on traffic are used where it is available.