More Tesla Motors coverage

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Launching a new auto business and building a brand in the United States is no simple task.

But inch by inch, electric-car maker Tesla Motors (TSLA) seems to be doing just that.

"Tesla continues to show its ability to manage expectations and deliver on what it promises," Morgan Stanley Research auto analyst Adam Jonas wrote in a report to investors.

Tesla "surpassed our expectations as momentum heading into the company's summer Model S launch continues to build," analysts at Barclays Capital told their clients.

Both investment houses were reacting to Tesla's first-quarter earnings report this week.

Tesla said its first-quarter loss widened to $89.9 million, from a $48.9 million deficit a year earlier as it spent more on car development. Revenue dropped 38 percent to $30.2 million.

Normally those aren't stellar numbers. But Palo Alto-based Tesla is still essentially a startup and burns a lot of cash. What grabbed the attention of analysts was the announcement by CEO Elon Musk that the company is advancing Model S sedan deliveries to June from July and that it has more than 10,000 orders for the battery-powered car.

The announcement alleviates investor jitters that the automaker might be facing some unforeseen roadblock in launching production and getting the car onto the road by its promised time, Barclays Capital noted.

Model S sales also will start bringing badly needed cash into the company.