[Arragonis]

So the models are not related to the "the new engine a transmission [that] will be installed in a prototype for summer" but for older ones ? Models can be accurate but observations are far better currency.

On a seperate question how are they going to be able to complete testing prior to full production which is quite soon - for example in very wet places, snow, ice, very hot, desert, seaside, mountains, salty roads (that plays hell with electrics), rough roads, high and low speeds, town, city etc etc.

For a full sized company a new car development costs about $0.5bn and thats just for the basic cheapy models like the Mirage which probably tested in Alaska or Norway as well as Death Valley and Germany for high speeds.