When do you have to retake your driving test?

I just got my new driver’s license with my updated address. I’m not sure what to do with the old one, and I’m kind of afraid to just throw it in the garbage. Is there some way I can safely dispose of my old driver’s license?

I had a friend help touch up my car’s clear coat, but he went a little too heavy with the spray paint and now I have a couple of runs that stick out like a sore thumb. I just hope this is easy to fix. How do you fix clear coat runs on a car?

Is there any way to defog my car windows when it rains if I don’t have A/C? All the tips I’ve seen have to do with air conditioning, but it’s too cold to turn on the air conditioning!