This is kind of a “canary in a coal mine” comparison. If a hummingbird is in a hover when a car slows down drastically, might it hit the dashboard? If your head might do so, why wouldn’t the hummingbird?
Some moron in a Washington Post automotive column called “Click and Clack” actually posed the question. Read more here: “Click and Clack: A Real Humdinger.” Basic physics should show that the bird, as well as your head, will keep traveling forward no matter that the car is coming to a sudden stop.