A $4.5M Koenigsegg Agera RST takes on a Tesla Model X Plaid in a drag race—and the results are not what you'd expect.

Cars don't get much faster than the Bugatti Veyron and Koenigsegg CCXR. You want to go any faster, you'll need a top-fuel dragster or a Bonneville land speed record machine. That's why the two ...