The camera car shown here is a viable option when the established camera cars are unavailable for a particular job, or when a "simple approach" is needed.
The setup is safe. There is sufficient area for the director, dp, and AC to ride on the raised platform. On the deck is where the grip and crane tech are positioned. The AD can ride inside the cab. Everyone has restraints. Speed is kept reasonable, meaning, this is not a high speed pursuit vehicle.
The crane itself has an air ride pneumatic center posts to deal with up and down shock loads and the Movi Xl does its job on image stability.