Tesla founder Elon Musk said on Monday he aimed to get self-driving Teslas ready by year-end and hopes they could be in wide release in the United States and possibly in Europe, depending on regulatory approval. His comments came during an energy conference in Norway. The billionaire tech entrepreneur, also had an opinion on children. Musk, who has fathered 10 children, said the world needs to “make more babies” – and to keep digging for oil. Musk subpoenas ex-Twitter CEO and friend Dorsey in battle over buyout The richest man on the planet, who has repeatedly warned that low birth…