No, not at this time. We use an open-ended timing belt fixed at both ends of the track that is required to be in a straight line.
We have multi-point key frames to lock in the focus and tracking at up to nine points for a shot. This means that "flying by" a product on a linear track can keep the subject in center, and in focus.
This does mean we can't do a full 360 around a subject for example which is a limitation with those that are used to this with curved track.
On the plus side, it means we don't have many limitations on subject placement and shot styles that using curved track requires. Want to track a subject on pan while tilting up . . .no problem. Want to have two subjects where we hold on one and then move to another . . .not an issue.