Thinking back. I think my +4 had a solid wood dash. Factory, they were not burl. Would have been hard to do the radius for the glove box in veneer. OK, Bentely perfected doing that somehow. Not sure how, but I think they use a steam press or something.
Anyway, read an analysis of all the various glues, how they hold up with stress, temperature and moisture. I can see a big advantage to hide for furniture. It does not creep, so that is good, but it's resistance to moisture is not that great and it's bond strength is not that great. Another project is a new center channel speaker cabinet. Might give hide a try there. It will be a single curve, not like all my previous cabinets. Last couple came out better. Maybe too thick last time as it left small ripples, but within sanding thickness. One piece in the bag now, and then the big instrument cluster.
I see new liquid hide glues, but reading, it sounds like the behave more like PVA.
They had newer glues as the floors and bulkhead were plywood in the +4. I assume Formaldehyde based. Even epoxy was invented in the '30s. Of course other glues were used for plywood as it goes back to Egypt BC. Hide glue fails @ 140, so marginal inside a closed car. I figure is is that harsh as some of the factory glue had failed.