Roasters arent meant to be driven with the top up anyways. The top is just for emergency's where you HAVE to drive somewhere in bad weather. I had an S2000 and I probably put the top up 3 times in a year.... Here in TX the winters are mild and dont last long so thats what the wifes beater was for
If im able to afford the new 370 Roadster it will most likely be the same "rarely see the top"