Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of Tesla Motors (NASDAQ: TSLA) were revving up today, gaining as much as 23% as the electric-car maker predicted it would post its first-ever quarterly profit this May.

So what: Tesla said first-quarter sales of the new Model S sedans are coming in better than expected, topping 4,750 units, ahead of guidance at just 4,500. Tesla shares reached a new all-time high on the news as the company also announced that it would no longer produce a cheaper, lower-range version of the Model S due to low demand. CEO Elon Musk also alluded to a big announcement coming tomorrow, saying he would "put my money where my mouth is in a major way." Some speculate that the announcement could be related to quicker repayment of government loans or putting solar panels on cars.

Now what: With a backlog of 15,000 vehicles and its first profit in the pipeline, Tesla may be well on its way to disproving the naysayers. Its high-performance electric cars have elicited glowing reviews, but the stock is still pricey from a valuation perspective. Tesla did not provide more specific guidance so we don't know how much of a profit to expect, but the pieces seem to be falling into place to make this a long-term winner.

Fool contributor Jeremy Bowman has no position in any stocks mentioned. The Motley Fool recommends Tesla Motors . The Motley Fool owns shares of Tesla Motors. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.