GAP insurance is for anyone who buys a new car, not just Finance buyers.
Its advisable to have it with finance as you can have a written off car, and still owe the finance company the difference between the paid out value, and the financed amount.
Woody got it so if he wrote his car off, he's effectively paying himself the difference, rather than a finance company.
When I ordered my 200, I opted for the Renault GAP Insurance, which is a new vehicle policy, not back to invoice policy. Also, being direct through Renault, there is no messing about with 3rd party companies not willing to pay out.
Its also worth noting that say if in 34 months time it gets written off, I can take the money to another dealership and get ANY other car, your not just restricted to Renault, so long as the financed amount is settled (you pocket the difference).
Whats the penalty for this flexibility you may ask?? £350. Not cheap, but I think for hassle prevention, it will be worth it.