Starting out in any kind of industry that relies on manufacturing and continual research is going to very expensive, but the good thing is your costs are destined to continually come down. Until they can drive down their production costs and adoption increases, I have a feeling we'll see many more quarterly losses before they start to become profitable.
I think the future of Tesla's revenue model will be split 50/50 between sales and licensing. The deal Tesla signed with Toyota in 2010 to develop an electric Rav4 was just the beginning. The technology and advancements Tesla have made put them in a fantastic position to licence it out to other car companies as more and more of them move into the electric car market, they'll most likely come crawling to Tesla.
I'm excited to hopefully own a Tesla vehicle one day, in Australia it's not really a viable option to own one just yet (that I am aware of anyway), but I know that will change soon enough. Don't be concerned with the loss, there are lot of companies out there not turning a profit just like Tesla.