Looks promising, could we 3d print houses now? The last part of engineering which have now been automated. I want something like cement-metal protection on my

Looks promising, could we 3d print houses now? The last part of engineering which have now been automated. I want something like cement-metal protection on my car paint coating, ceramic coating and or sapphire based coating. Ie something super hard and non-sticky to dirt and non corrosive.