What happened Shares of electric-vehicle (EV) upstart Workhorse Group (NASDAQ: WKHS) fell 22% in December, according to data provided by S&P Global Market Intelligence, as some of the wind came out of the company's sails. So what The biggest news of the month was that the U.S. Postal Service is delaying a decision on who will get a contract to build next-generation trucks for its fleet. The contract could be worth $6 billion and Workhorse was seen as a frontrunner, so this could be a big blow to the company. Image source: Getty Images. To be clear, a decision has not been made about the contract; what was announced was simply a delay. An announcement is expected by the end of March, according to a USPS spokesperson. Now what I don't think a delay in the USPS contract fundamentally changes the future for Workhorse, but it puts more risk in the company's operations. Investors were betting it can be a growth stock in the industrial EV space, serving big customers like the USPS. That bullish thesis could still come to fruition, but Workhorse has a lot of work to do, and investors are still taking on risk given that the company has yet to reach large-scale production yet. 10 stocks we like better than Workhorse GroupWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and Workhorse Group wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of November 20, 2020 Travis Hoium has no position in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.Source