Typical sidecars pivot to allow a motorcycle to lean normally, so it's still countersteering. Rigidly-attached sidecars are used for some kinds of racing; those

Typical sidecars pivot to allow a motorcycle to lean normally, so it's still countersteering. Rigidly-attached sidecars are used for some kinds of racing; those fundamentally steer like cars, though the "passenger" typically shifts their weight quite a bit to optimize handling.