The Dow Jones Industrial Average (DJINDICES:^DJI) was trading 113 points higher, or 0.68%, by midafternoon despite a slow day for economic news in the U.S. and after pro-Russian separatists declared victory in Sunday's vote to declare independence from Ukraine. The Ukrainian government referred to the vote in the nation's east as "illegitimate," while the U.S. called it illegal.

"The vote seemed like a negative, but the violence that many thought would happen didn't, and at this point, no news is good news when it comes to Ukraine," said Channing Smith, co-portfolio manager of the Capital Advisors Growth Fund at Capital Advisors, according to Reuters.

With that in mind, here are two U.S. automakers making headlines in the markets today.

A section of Tesla's Model S assembly line. Source: Tesla Motors

Tesla Motors (NASDAQ:TSLA) made news for a couple of reasons. First, the company said it would stop supplying battery packs and motors for Toyota's electric RAV4 model. According to Tesla's filing, the electric-vehicle maker generated $15.1 million in revenue in the first quarter from the deal with Toyota. That was slightly more than the $14.4 million generated in last year's first quarter.

This is a small chunk of change compared to Tesla's total first-quarter non-generally accepted accounting principles revenue of $713 million. Tesla's likely made the move as its own electric crossover, the Model X, is coming to the market next year. While there will be a substantial gap in the price points between the electric RAV4 and the Model X, Tesla apparently wants to keep any advantages of producing those battery packs to itself.

Tesla is also faced with a new front in its battle to sell its vehicles directly to consumers. Some "anti-Tesla" language has been added to state legislation in Missouri that would explicitly require consumers to buy vehicles through franchise dealers, according to Bloomberg.

"This extraordinary final-hour maneuver amounts to a sneak attack to thwart due process and hurt consumer freedom in Missouri," according to a statement from Tesla, as reported by Bloomberg.

In other automotive news, Ford (NYSE:F) released some interesting facts surrounding its very popular line of EcoBoost engines. Ford recently sold its 500,000th EcoBoost-equipped F-150 and claims those engines have saved an estimated 56.8 million gallons of gas on an annual basis.

Since 2010, Ford has accounted for 91% of industry growth in V6 truck sales, and the next generation 2015 F-150 looks to continue that trend.

"We expect those numbers to hold for the rest of the year," said Doug Scott, Ford truck group marketing manager, in a press release. "It really is amazing when you consider we are doing that with just two V6 engine choices – the 3.5-liter EcoBoost and the 3.5-liter Ti-VCT engine. When we come out with the new 2015 F-150, we will offer three different V6 engines, so there is potential for further growth."

Fuel economy, even in trucks that are often considered as work tools, is becoming more of a purchasing factor. That's big news because Ford is clearly a step ahead of competition with its EcoBoost engine lineup. If the 2015 F-150 is a major jump forward in fuel economy, as it is intended to be, it could push sales in America's most profitable vehicle segment much higher for Ford -- a big win for the company and its investors.

Investors would be wise to watch the launch of the 2015 F-150 because this is the first time aluminum has been used on such a massive scale in the automotive industry. If everything doesn't go according to plan it could put a dent in Ford's profitability in the near-term. 

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