Problem solving

Hello here is my problem solving for 'hot chocolate math' I thought that 3x3x2 was the best answer - I checked it and it was right. WC Whc MC C and all those others stand for the flavours, toppings and the sprinkles.

CAR Math

Here is my problem for you to solve. See how many different cars you can make.

Brand:Ferrari, Nissan, Audi, Porch, Toyota, Honda and Hyundai.

Made out of: steel, aluminium and iron.

Colour: yellow, grey, black, silver, red and gold.

Extra: sun roof, GPS, TV and heated seats.

How many do you think you can make?