Final answer:
Vehicles do not move sideways without any additional steering input. The direction of a vehicle is determined by the steering input provided by the driver.
Step-by-step explanation:
No, vehicles do not move sideways without any additional steering input. Vehicles typically move in the direction that the steering wheel is turned. When the driver turns the steering wheel, it changes the direction of the front wheels, which in turn determines the direction of the vehicle. If no steering input is provided, the vehicle will continue moving in a straight line.