One of the biggest catalyst(1) Megapack margin is close to 60 % (versus car 28%). Much easier to manufacture, scaleup. (2)Right now small portion of revenue. Elon said it can be bigger revenue than car (3) Order book filled for 18 months + (4) Wewill be using it for Semi and all Superchargers (so our cost to supercharger =0 electricty cose, output all profit).