Case in Shell Script

#! /bin/bash

vehicle=$1

case $vehicle in 
    "car" )
        echo Rent of $vehicle is 100;;
    "bus" )
        echo Rent of $vehicle is 200;;
    "jet" )
        echo Rent of $vehicle is 500;;
    "jeep" )
        echo Rent of $vehicle is 150;;
    * )
        echo Unknown vehicle;;
esac