Vroom, an online platform for buying and selling cars, has raised $440 million to date. : Vroom has raised $146 million in Series G funding, an expansion to a $30 million investment we reported in early September. U.S. automotive retailer AutoNation led the round for the startup, with participation from existing investors T. Rowe Price, L Catterton, General Catalyst and Fraser McCombs Capital. The company declined to disclose the valuation, but says it was an up round. Vroom was valued at $440 million in 2016 with a $50 million financing, according to PitchBook.