Do not leave your dog in the car unattended.....
Many reasons why......
The dog could get stolen....no does not matter if your vehicle is locked or not.
Thieves always finds a way
Your dog could die of heat stroke if it is hot or even mildly warm outside. Windows open or not.
Your dog could freeze to death if its too cold outside.
If there is a natural disaster/emergency there is no way for your dog to get out.
Your dog could tear up and wreck your car's interior.
Could get ticketed. It is illegal in some places to leave your pet in the car unattended.
Your car window could get bashed out from a concerned animal lover, policeman, etc. if your dog looks even the slightest bit of in distress.
If your pet is lonely from being left at home why leave them alone in the car while you do your shopping for minutes, hours or whatever. Kind of hypocritical....just saying....
Have a wonderful day ^_^