Flight Crew Air Transport Pilot (ATP)
Situational Awareness
No Specific Anomaly Occurred All Types
General None Reported / Taken
Airport; Human Factors
While eating lunch in between [flights] we were sitting at a table outside the fbo facing the rwy. In front of us was a facility van parked parallel to the rwy approximately 10 -15 ft. Outside the rwy edge line  Just north of the van was a station wagon parked perpendicular to the rwy. A C560XL was back taxing for departure. As the excel spooled up we noticed a woman get in the station wagon.  At the same time as the excel started rolling for takeoff the woman started the vehicle and began backing up. She stopped the vehicle around 5 ft from the rwy edge as the excel went by at approximately 90 knots. She whipped her head around and mouthed something; obviously startled at how close she had come to the excel.  She left in the vehicle and then showed up to our location a short time later. I asked if she had noticed the excel and she responded with 'I did not go over the white rwy line did I?' The close proximity to the rwy that vehicles are allowed to move about unsupervised is a serious safety concern in my opinion  Another crew witnessed the event with us and had the same opinion that it is an accident waiting to happen and added that if the vehicle had clipped the wing the excel could of wound up veering into the fuel farm and we all would of been in the blast area. They also added that due to the power brokers that use ocean reef regularly they didn't see anything changing anytime soon. I feel that the area in front of the fbo is too narrow for vehicles to be moving unsupervised while aircraft are landing or departing. Especially passengers who are not trained or aware of the dangerous surroundings. If the van was not parked in its location the driver might have been aware of the departing aircraft. As it unfolded she didn't see the excel till she was right on rwy edge line due to her line of sight backing out. Since this is a private airport; normal safety policies are not adhered to that apply to even the smallest muni airports that we go into. It is my opinion that not much can be done at this location to correct this problem except extreme vigilance while operating in and out of ocean reef. A simple spotter in front of the fbo to ensure vehicle traffic is clear of the rwy environment during operations could go a long way.
ASRS has received reports concerning the relaxed standards at Ocean Reef Airport previously. Pilots who use this airport should be extra vigilant.