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 Saffire"): Saffire was a high end gear-less motor scooter produced in India by Bajaj Auto.
Relevant evidence: Yes