It’s been a pretty good week for Tesla CEO Elon Musk. His biggest success was the test launch of the Falcon Heavy rocket system, with which SpaceX put Musk’s own Tesla Roadster into a Mars-bound orbit – a very expensive bit of marketing, but one whose spectacle would be hard to match. With Tesla, two much smaller announcements added to the momentum that its energy business has been building over the past two years. However, the news was released just ahead of its quarterly results, which showed a record loss of $675.4m, up from Q4 2016’s loss of just $121m. The ongoing complications in the Model 3 production process will be to blame for the rise. But the energy wing…