While leaving his mother-in-law’s funeral, former President Donald Trump and his wife, Melania, were seen taking separate cars. This prompted relentless speculation on social media as to why the ex-president wasn’t riding with his grieving wife. Liberal activist Ron Filipowski tweeted a short video of the Trumps walking to a black SUV, where a Secret Service agent held the passenger-side rear door open for Melania. After she climbed inside, she appeared to say something to her husband, who said something brief and inaudible, turned around and got inside the car behind his wife. “Separate cars,…