Re: " those cars had almost no trunk space..."
Some time in the early 1970's I and my future wife were youth hostelling around Italy and were waiting at a bus stop for the Pompei ruins. A kindly couple in a real, original, Fiat 500 stopped, and offered us a lift. They were peasant shaped and sat in the front, we were somewhat slimmer, in those days, and sat in the back with our two large rucksacks.
No problem - a fast and comfortable ride. They don't make cheap iconic cars any more.