Not a Tatra: Buick based central tailfin convertible

Buick1936with BohmanandSchwartzbodyTopperFilmHughGrant

This is the car shown in the movie “Topper” (1937) with Cary Grant and Constance Bennett. It had a single fin on the back deck. It was a modified 1936 Buick customized by Bohman & Schwartz and fitted with special controls, including a second hidden steering wheel. As a stuntman drove the car using the hidden wheel, it would appear as if the vehicle was being driven by a ghost. The car has been remodeled a few times since 1937.