I just listened to part of the Ludicrous mode announcement. Musk said that the new fuse was developed with a its own battery and that it would constantly monitor current at the millisecond level, and will cut power when necessary. He said the new contactor was inconel, a high temperature, space-grade alloy, instead of steel, and that it keeps things springy under the heat of heavy current. Based on what Musk said about the new fuse and contactor needed for Ludicrous mode, it sounds to me as if this combination should also improve overall reliability by reducing the incidence of catastrophic contactor failure. Does that sound right to those of you that have more technical knowledge of this stuff than I do? Assuming the above is correct, this could be an additional selling point for, say, a somewhat reluctant spouse who may value improved reliability more than increased speed.