According to the YouTube description, this video was shot at the 2014 Sun Valley Road Rally in Idaho. The event shut down a portion of highway and allowed cars to hurtle down that stretch at ludicrous speeds, and a Bugatti Veyron Super Sport with 1,200 horsepower on hand showed the crowd what fast really looked like. Thankfully, the organizers monitored the vehicles' speed, confirming that this supercar managed a massive 246.4 miles per hour.
The way that the Veyron reaches that momentum is just as impressive, though. At first, all you see is a fast-moving white spec, but it doesn't sound like a car. It has more of the constant note of a jet but with a little audible grumble as it streaks by. Scroll down to see what nearly 250 mph looks like on a deserted stretch of highway.