We are a joyously two-Tesla family: S85D and 3LR. Trying to decide among three options, once we’re able to turn our second Model 3 reservation into an AWD: Two Model 3s. Zero-cost trade of S85D —> 3LRD. Long-distance road trips = tightly packing. 3LRD + S100D. Cost = $50K. Gives us long-distance road trip car. 3LRD + S85D. Cost = near zero. Gives size, comfort, looks of S ... but Model 3 still the road trip car. Option 2 appeals. However ... Second-biggest worry about purchasing new S100D is possible S110D (370 miles) or S120D (400 miles) within a year, through incorporation of 2170 batteries. Biggest worry is possible S revision with 200 kW Supercharging. 200 kW Superchargers are coming, and EPA filing shows Model 3 battery architecture can already handle this charging speed. Range and charging speed matter more to us than they do to many others, because we use a bike rack in the summer that cuts range roughly 30%. And, even without the bikes, we’ve noticed a surprisingly large travel-time reduction going from S85D —> 3LR. Somewhat longer range. And decidedly-faster Supercharging (on a miles added per hour basis, due to Model 3’s much lower per-mile energy usage). Our five and one-half hour S85D trip to Mammoth is now back down to ICE-ish times well under five hours. What our other folks’ thoughts re the imminence of faster Model S Supercharging ability? If we do splurge on a new 100D, we’ll want to keep it for several years.