Ford Europe chief executive Steven Armstrong has poked fun at Tesla’s production milestone for the second quarter of the year.

Shortly after Tesla built 5000 examples of the Model 3 and 2000 Model S and Model X units, chief executive Elon Musk took to Twitter to congratulate the firm’s workforce.

However, not willing to let Tesla bask in its production achievement too long, Armstrong responded on Twitter to say that the American carmaker builds the same amount of vehicles in just 4 hours.

In recent weeks, Ford and Tesla have been going back-and-forth on Twitter taking shots at each other. Late last week, Musk compared the energy at Ford’s production facilities to a “morgue” during an interview with the Wall Street Journal.

In response, Ford’s vice president of communications, Mark Truby, tweeted “No doubt the vibe is funky in that “makeshift tent,” but it’s not bad either across the street at the #FordRouge plant where a high quality, high-tech F-150 rolls off the line every 53 seconds like clockwork. Come check it out @elonmusk #BuiltFordTough.”

While Ford has the advantage over Tesla when it comes to production abilities, Tesla continues to lead the charge towards electrification and is building more electric vehicles than Ford.

At the start of this year, Ford announced that it will invest $11 billion by 2022 into electrification and will launch 40 hybrid and fully electric vehicles. Of these vehicles, 16 will be fully-electric while the rest will be plug-in hybrids.