By Luc Olinga The billionaire entrepreneur has never hidden his ambition to transform Tesla vehicles into living rooms on four wheels. Elon Musk and Tesla (TSLA) – Get Tesla Inc. Report seem ready for a new challenge. The serial entrepreneur is one step closer to his ambition to turn Tesla cars into living rooms on four wheels where passengers can be entertained by watching films and TV shows in streaming, even playing their favorite video games or simply doing something other than driving once they have activated the autonomous driving system. We are still a long way from seeing Tesla vehicle…