Question: Saffire was a high end gear-less motor scooter produced in India by Bajaj Auto, which type of motor vehicle transmission that can automatically change gear ratios as the vehicle moves, freeing the driver from having to shift gears manually, is called?
Sentence (from "Bajaj Super"): The Bajaj Super was a two-stroke 150 cc motor scooter produced in India by Bajaj Auto between 1976 and 2006.
Relevant evidence: No