While everyone waits for the Model X which of course will be great, I began to wonder if replacing the front engine will be as easy as replacing the rear? Tesla has done a great job with the Model S insuring service is an integral component of their design philosophy. Clearly one of the great benefits of the rear motor is the relative ease of dropping the unit. Should we expect the same with the front engine based on the difference in size/shape and placement? It certainly appears to be more difficult to get at and replace. Since the motor will be new one would expect some initial difficulties with a higher replacement rate than the Model S. Wouldn't be at all surprised if the final design looks different.