Hi, I am shoting a short where most of the dialouge take place in a moving car at night. 2 actors in car for 70 percent of film, other times 3 and 4. Thinking about hood mount looking thru front windshield and a side mount on each window, passenger and driver side arranged so they would not see each other. Using 5d or 7d or both. Is what I'm thinking do able and what mount would you suggest that can pop on and off the car quickly so I can change the angle of camera if i want.