You can drive it, but you need a car insurance binder. Does that mean you can't drive your dream car for a whole week because you don't have any insurance? Not necessarily.
You've already called your insurance agent with the car's details and the type of coverage you want, but it's going to take a week for the underwriter to complete the formal contract. After saving for years and browsing for months, you finally found The One-it’s even the right color!