Is I-270 in Maryland a toll road?

I read that there’s a light you can put in your windshield that helps with glare at night. I think they’re called anti-glare lights. What are they and how do they work?

I was approved through a lender for a $1,000 downpayment on my car. I signed the contract, but now the dealership is saying they need another $1,000 because the bank said so. When I called the bank, they didn’t know what the dealership was talking about, and now I’m unsure what to do. Can the dealership require this?

I have my own car and insurance. I am planning to rent a car while I'm out of town. Will my car insurance cover my rental car or will I need to opt into the rental car company's insurance?