How many wheels does the train have?
Five
How many wings does this airplane have?
six
How many wings does the airplane have?
Two
What is the name of cars that don't need a driver?
Driverless cars
How many people is carrying this car?
Five
Is this truck electric?
Yes
How many wings does the bus have?
zero, it does not have wings.
Is this car driverless?
No
How many wheels does the bus have?
Four