British-American Soul: Jensen Interceptor Convertible (383 ci)
French Soul: Citroen SM [Cheap French Soul: Citroen Deux-Chevaux in Charleston trim]
Swedish Soul: Saab Sonnett (the anti Volvo)
Italian Soul: Anything with a mid engine painted red. Front engine red cars with prancing horses on 'em qualify as well.
Japanese Soul: uhhh, uhhh, wait, I'm thinking, uhhhh.. hmmm, well, uhhh. Perhaps a German car instead.