Taking away someone else’s vehicle(s), like a scooty, car, cycle, etc. without their consent is considered as theft1. For example, if Ram has parked his car, and Sham takes it away, it will be considered as theft.
This is punishable with jail time of up to 3 years and/or a fine2. If your vehicle has been stolen, read here to understand the steps/options you can take to complain.