wheels do not spin at expected speed

[kfarr]

• instead of using test method with bone z position changing each frame, should use the same method in production with animated cars
• in doing so there is an approx 3x offset -- the car wheels are spinning 3x slower
• see /animated.html (https://github.3dstreet.org/animated.html)

suggested resolution: you can add * 3 to link and it looks better const distx = speed * 0.003 * 3; on this line