Here, some of the Centuries prohibit personal SAG vehicles. The TORSV ride gives drivers maps with an alternate route, so the non-riders can stay off the route, but still meet up with their riders at stops. (There's a non-rider fee so they can eat). For Brevets, it's against the rules to receive assistance from anyone but the RBA anywhere except the controls.
Still, I've seen a lot of older men with their really ancient mothers following them along in a car- they worry or something.
Nanci
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"...I'm like the cycling version of the guy in Flowers for Algernon." Mike Magnuson