so as the title says im going to shoot 4 cars this sunday. i have a good spot by the beach. r we might try another spot which shows downtown Miami in the background. what setup should i use? itll be out in the day. m not too worried about the actuall shoot itself. but on our way there...i wanna take rolling shots. what setup should i use for rolling shots? not long enough so it will blur but long enough so that the backround is blurred and the wheels are in motion..please give me some tips.