Documentary - GoPro test drive

Since we're going to film the presenter travelling between different locations we'll be filming quite a bit inside a car of him driving. We were planning to do different hand-held shots to get a lot of coverage, but were then made aware of the rules there are when filming in a moving vehicle while being under the educational system:

Checklist for filming inside a moving vehicle:
- A comprehensive Risk Assessment must be carried out prior to filming anything with a moving vehicle.
- All relevant vehicle legislation must be complied with and safety checks carried out.
- The competence of all drivers should be assessed in relation to the activity they are to be involved in and fully briefed beforehand on what's required.
- Everyone must remain seated and restrained properly while the vehicle is in motion, and loose equipment must be appropriately secured.
- Drivers should remain focused on the road at all times and keep both hands on the wheel.
- Use only foxed-position cameras (such as GoPro's) while the vehicle is in motion. Hand-held cameras are only to be used while the vehicle is stationary. 
- When filming vehicles on a public road, camera equipment and crew must remain at least 1 metre away from the edge of the road.

Because of this we'll be using GoPro's as the main cameras instead of DSLRs while the presenter is driving since, but use DSLR to get close ups showing details such as when the presenter is changing gear, turning on the radio, turning the steering wheel etc, while the vehicle is standing still.

To get and idea of what it'll look like we decided to do a test ride to find out where we should place the camera and how we would be able to record the sound the best way possible.

The footage we got turned out really grainy as we were rushed and didn't really have time to fiddle with the settings on the camera. We tried filming in 4K which was probably partly the reason why the footage was grainy. When placing the GoPro we tried having it in front of the driver at first, but discovered that it would be too distracting for the driver and moved it to his right side.

Sound wise we decided to use clip mics since they won't be very visible and is fairly easy to monitor. from the back seat. We are currently debating whether or not to use 2 GoPro's instead of one to have more to cut between, although that will make it harder for the crew to hide in the back seat, and thinking of which settings we should use for the GoPro.