The automobile Loan, or in common terms, car Loan, is treated more or less exactly as the house loan. The only difference is different accounts, and different interest rates. The basic car loan account structure is as follows:

-Asset
    -Current Assets
        -Saving
    -Fixed Assets
        -Car
-Liability
   -Loans
       -Car Loan
-Expenses
   -Interest
       -Car Loan Interest
   -Car Loan Adm Fees

For more information, please check Section 8.4, “House Mortgage (How-To)”.