Why does my car steam up overnight?
There are a few reasons why your car might steam up overnight. One possibility is that your car is leaking coolant, which can cause the engine to overheat and produce steam. Another possibility is that you have a clogged heater core, which can prevent heat from circulating properly and cause the windows to fog up. If your car is steaming up regularly, it's best to take it to a mechanic to diagnose the problem.