The other way around: the riding mechanic was not belted in; the driver was. The rider was thrown clear; but received a broken pelvis and broken ribs with the resulting collapsing lung. The belted driver went all the way around with the car. He has numerous broken bones and internal injuries; the most serious being a torn blood vessel which took about 40 units of blood before it could be stopped. Had it not been for the first responders and expert surgeons in the Salinas hospital a few miles away; he'd not be with us today. Though it IS mandated in the vintage racing organizations we run with, that all cars be fitted with current (within 5 years of manufacture) seat belts; the members of the group of pre-world war one cars, of which the Packard was one, would undo their belts as they entered the event on the pace lap. In this case the driver didn't (or forgot) to undo his belt. This they say because there are no roll bars on the big lumbering cars. This is an age old conundrum. Do you want stay with the car; or do you want to be thrown clear? In this case it would nave been better had the diver been thrown clear. Thus, as I write this there is an ongoing discussion with the sanctioning race clubs (and probably insurers of them). The talks being: Should the rules be changed to "race cars without roll bars be prohibited from having seatbelts; and those with roll bars be required belts?