Does anyone know the name of the other car in the mausoleum display? Now thats even more interesting; a white convertible Packard 4 door. Jinnah was a car buff, and owned many high quality cars in his lifetime.
The newspaper cutting shows Jinnah and Mountbatten driving to the assembly building in Karachi, August 1947 (I believe), in the loaned Rolls Royce of the Nawab of Bahawalpur. This car, alongwith the entire auto collection of the Nawab then spent 30 years in a locked garage, and was only recently auctioned by the Pakistan Govt. It was acquired by a Karachi based collector, and was seen at the Feb 2007 vintage car show held outside the Forum in Karachi. Photos on some Pakwheel link, as well as www.vcccp.com.

Shows the car in storage some years ago..