his.car.speed) * .25), 1);
  this.ctx.drawImage(this.bloodsprites, 64 * Math.floor(Math.random() * 4), 0, 64, 64, 0, 0, 64, 64);
  this.ctx.restore();

  this.score += 100;
  document.getElementById('currentScore').innerText = `$${this.score}`;
})
            </code></pre>
          </section>
          <section>
            <h2>Smears</h2>
            <pre><code>
updateSkidmarks() {
  ...

  if (this.bloodtyres > 0) {
    this.bloodtyres -= 4;
  } else {
    this.bloodtyres = 0;
  }

  let a = ((this.maxsp