create a function and then use requestAnimationFrame(function name) inside it and the have your cars x location add on 1 each frame or to make it faster put it higher than on heres a quick example with a rect
let speed = 2;
let x = 20;
let y = 20;
function car(x, y) {
ctx.beginPath();
ctx.rect(x, y, 150, 100);
ctx.stroke();
}
function move() {
ctx.clearRect(0, 0, canvas.width, canvas.height);
car(x, y)
x += speed;
requestAnimationFrame(move)
}
move()