diff --git a/README.md b/README.md
index 3131a27..56d84a6 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 `make && make run`  
 
 ## Create a new car:
-`curl -X POST http://localhost:8080/v1/cars -d '{"data" : {"type" : "cars" , "attributes": {"brand" : "bmw", "model": "x5", "price": 999, "status": "OnTheWay"}}}'`  
+`curl -X POST http://localhost:8080/v1/cars -d '{"data" : {"type" : "cars" , "attributes": {"brand" : "bmw", "model": "x5", "price": 999, "status": "OnTheWay", "mileage": 0}}}'`  
 
 ## List cars:
 `curl -X GET http://localhost:8080/v1/cars`  
diff --git a/internal/model/model_car.go b/internal/model/model_car.go
index 3f90c87..075bd25 100644
--- a/internal/model/model_car.go
+++ b/internal/model/model_car.go
@@ -10,11 +10,12 @@ import (
 )
 
 type Car struct {
-	ID     string `json:"-"`
-	Brand  string `json:"brand"`
-	Model  string `json:"model"`
-	Price  uint64 `json:"price"`
-	Status string `json:"status"` // OnTheWay, InStock, Sold, Discontinued
+	ID      string `json:"-"`
+	Brand   string `json:"brand"`
+	Model   string `json:"model"`
+	Price   uint64 `json:"price"`
+	Status  string `json:"status"`  // OnTheWay, InStock, Sold, Discontinued
+	Mileage int64  `json:"mileage"` // I suppose it should be made unsigned, but that's what the task says ¯\_(ツ)_/¯
 }
 
 func (c Car) Verify() (bool, api2go.HTTPError) {