Vapid is the in-game equivalent of Ford...
I'd much rather see the Tahoe but I'd much rather it be a DeClasse as it already bugs me when the manufacturers are screwed up in game even though they are fictional (Dukes being an Imponte instead of a Bravado, Washington being an Albany instead of Dundreary, etc).
It's probably just coincidence but this is what I think the Regina most closely resembles. (a '73 Plymouth Fury)
I guess the Regina's kind of a "who gives a sh*t?" car for most people, but I like it. heh
It definitely has Satellite in the front end, but I still find the rest of the car reminds me more of a '67 Impala wagon, particularly the more dramatic up-kick in the rear quarters, the sharper angled C-pillar, thinner (when viewed from the side) D-pillar, and the taillights remind me more of a '67 Chevelle wagon. Of course the stock wheels also lend to its GM look.
I'd own the hell out of one if we could remove the wood paneling. It is fitting for a station wagon and works perfectly for the "family truckster" style of station wagon, but I've always liked custom wagons and I'd want it done up a bit more like this (not quite as low though):