All: Eagerly waiting for the summons to configure production X 12121...So, we have S 60 41448....and it has the same power motor as the 85 and weighs over 200 pounds less....we detect no difference in acceleration when we have driven our car versus loaners and another 85. That said, the 60 is represented to be slower. The X 70D and 90D appear to have the same motors...the 70D ought to weigh less though do not have that info yet, but if so, there is less mass, so...anyone know if there will be any actual difference between the performance of 70D versus the 90D, and if so, why? I am probably not going to spend 13K for 37 miles, but if the performance is significantly different, it would be an added factor...because the power of the S is pretty seductive and habit forming....J