After posting a record loss of $710 million, shares in Tesla slumped over seven percent wiping more than $3.4 billion off the value of the company.

The California-based company posted poor results, which were then followed by founder Elon Musk making light of the losses. Musk took to Twitter to write “la la la” while linking the results for this year’s first quarter.

The company’s founder also appeared to have lost patience during a call in which Wall Street analysts tried to ask questions about Tesla’s future financial health.

Cutting off a question, Musk told an analyst: “Next, next. Boring bonehead questions are not cool. Next.”

When asked about what percentage of customers had chosen to personally configure their Model 3 vehicles, Musk replied: “We’re going to go to YouTube. Sorry, these questions are so dry, they’re killing me.”

While Tesla reported losses of $710 million, the company did bring in more revenue than expected. Analysts predicted a revenue of $3.28 billion but Tesla brought in a revenue of $3.4 billion – up 26 percent from the same period last year.

Despite various problems in the factory, which led the Freemont plant to temporarily close last month, Musk insisted that the group was on track to hit its target of 5,000 vehicles a week by the end of June.

“Our focus is on the Model 3. We need to get that to above 5,000 a week at a good margin. We need to become a profitable company,” said Musk.

The group have said they hope to be profitable by the third quarter of 2018.