This is a test animation of steering a vehicle for a new video I’m preparing. The wheels rotate in proportion to the vehicle speed and the vehicle can move in any direction. I looked for examples of how to do this and found that most wheel animations only work when the vehicle is moving in one direction. I achieved rotation in any direction by using a helper object with a curve modifier. The curve modifier enables me to position the helper object along the curve by a changing only its X location. The wheel rotation can then be produced using a driver which references the X location of the helper object. The steering uses another helper object which follows the vehicle and the steering points to this helper object during the animation to the produce steering effect.