constraint.js

  const [wheelShape, wheelApi] = useSphere(() => ({
    radius: 1.2,
  }));

  const [chassisShape, chassisApi] = useBox(() => ({
    args: [5, 2, 0.5],
    mass: 1,
  }));

  const zero = [0, 0, 0];
  const leftAxis = [0,1,0]
  const rightAxis = [0,-1,0]
  const rightFrontAxis = [0,-1,0]
  const leftFrontAxis = [0,1,0]

  const cont = useHingeConstraint(()=> ( {
    bodyA: chassisShape, 
    bodyB: wheelShape,
    optns: {
    pivotA: [5,5,0],
    axisA: leftFrontAxis,
    pivotB:zero,
    axisB:leftAxis
  }}))