I have a question

What if humans did not exist?

If humans just disappeared right now then a lot of bad things will happen. Just 30 seconds in after humans went extinct all the cars and trains and planes would start to crash. Then only 5 minutes to 6 hours every thing happens. What happens is everything starts to over heat and nobody’s there to stop it. So chemicals and acids would get into the air and kill all the animals. Soon Earth would just be land and nothing else.