Unexpectedly, I've been using old horses with the new one. (I still only have one new, but I'm in the conflict phase some here may have lived, when the new ones showed up ...)
As I saw Ralph Gemein's pictures, and how proudly he uses only the old kind, I came to think with myself what opinion should I make up for myself. (I still don't have an opinion.) But I've been using both, and will use them both kinds simultaneously, because they're two characters now, and of this I am very proud about!
With cars it's a little easier, maybe, once it shows that decades change car styles. In Europe they (are you in Europe or in the States, Tim? -- or where else? (...)) have those wonderful Deux Cheveaux up till this day, I think ... In Brasil we don't have small[, thin] cars but the [old] Volks Wagen [that we call "Fusca", and in English it's Beetle, I think], & I'd like to have a small [& thin] car ... Once there's none, I think about a ... don't know its name in English ... a Vespa?, Portuguese "lambreta" ...
But this old Playmobil car, in my opinion, looks like the old Fiats from the '80s.
Cars do get old too, in the Playmoworld ...
Gus