{
  HONDA   => {
               comment => "This is Luxury cars.",
               models  => { plain => ["City", "Brio", "Amaze"], plus => ["Accord"] },
             },
  HYUNDAI => {
               comment => "It is best cars.",
               models  => {
                            plain => ["Verna", "i10", "i20", "Xcent"],
                            plus  => ["Eon", "Tucson"],
                          },
             },
  TOYOTO  => {
               comment => "This is Class cars.",
               models  => {
                            plain => ["Etios", "Innova", "Camry", "Corolla"],
                            plus  => ["Fortuner"],
                          },
             },
}