Can you insure a car that is not in your name in Arizona?

Because once again, you cannot buy insurance on something that you don't own. If a claim occurs the company cannot pay you for damages because it is not your vehicle and you therefore do not have the financial loss. The company cannot pay your Dad because he does not have a legal insurance contract with the insurance company. The contract that you do have is then null and void because you committed material misrepresentation and fraud.

Insurance for a Car not in your Name

Yes, You can Insure the property of another person. So Long as you have authorization to do so and the owner is benefited, or an other insurable interest in that property exists.

An example would be a case where dad says " OK, you can use my spare car but you gotta get your own coverage".

If You have permissive use from the owner of a vehicle, then obviously you have an insurable interest. However, Only the Legal owner of the Property or the designated agent of the owner can receive compensation for the property in the event of a covered property loss.

Whether your insuring for liability only or you buy full property coverage you need to list the vehicle owner as a named insured on the policy along with yourself. Then Dad will be happy and proud that you were prudent enough to fully insure his and your interest in the vehicle he loaned you.

List all drivers for liability purposes and list dad for his property and liability interests.

Another example would be almost every time we Rent A Car. When we purchase the daily insurance with the rental car we insure our liabilities in the use of Someone Else's Vehicle.

You can not insure the property of another when no insurable interest exists. It would be unlawful to insure the property or life of another where the intent is to gain unduly from another persons loss.

CORRECT ANSWER
You cannot insure a vehicle that you don't own. Just because the owner gave you permission to drive the car does not mean he is signing over interest in the car to you. Your name cannot go in the named insured section of the application. You can be listed as a driver but not as the named insured unless you own the vehicle. Rental Car business is not like what you are discussing here. The Rental Car Service has the person who if renting the vehicle to sign a new contract with them to provide certain exchange of guarantees from both parties. This contract is listed as acceptable in part with the automobile insurance contract the owner signed with the insurance company. Provisions in the auto insurance contract allow for some transfer of certain coverages in certain instances. The fact is that in a personal automobile insurance policy the owner of the vehicle must be the named insured on the contract.