1. Press key combo Win+R
2.Type in Run "appdata".
3.Then should pop up Windows Explorer
4. click LocalLow/Amistech/My Summer Car
5.You can delete these files or make backup folder.
6.Make sure you have folder emty
7.Now you need to open file with WinRar
8.If you dont have it download trial from here https://www.rarlab.com/download.htm
9.Extract it anywhere you want
11.Copy all files
12.Paste them in the folder what you opened before
13.Open My Summer car
P.S- This save file contains Maxed Satsuma with nitro.