I test drove (and ordered) a 90D and commented on how little the car would coast with my foot off the gas. The salesperson directed me to the regenerative brake settings and I changed it to low. She said with this setting, the brakes wear out much faster (believable) and total mileage is negatively affected (questionable for my driving style). For people who are always pressing either the gas or brake, I can see keeping regenerative on high helping a lot, but for those of us who understand the nonlinear dynamics of traffic and the benefit of rolling up to traffic lights and leaving a gap in stop-and-go traffic, I can't imagine how this setting could help. Surely someone whose goal is to maximize the amount of time spent driving with neither the gas nor brake pressed would do better never expending the energy rather than inefficiently recapturing it. Any theoretical insight or real world observations about range between the two settings?