In My Summer Car, there is no pause function, nor the ability to save the game at any time. The only place you can save the game is the toilets. Move your mouse over the toilet until you see SAVE and QUIT to MENU.
After saving, you will be taken to the main menu. To continue playing, select CONTINUE. Each record skips two hours of the time in the game - you can use it to speed up time.
The toilet can be found in the house and in many places on the map, for example behind the shop in the city.
Be careful not to save the game at some unfavorable moment, such as somewhere far away from home, without resources and with attributes close to the red bars, because each record overwrites the previous one.