Result
make      | model          | diff
----     ------         -----
'Ford'  | 'Mustang'  | 3000
'Ford'  | 'Explorer' | 1800
'Ford'  | 'Focus'      | 1200
'Honda' | 'Civic'      | 0     
'Honda' | 'CRV'          | 0     

-------Compile time: 0.011, Execution time: 0.002