Best: Tie between getting upgraded to the Porsche 911 convertible and Porsche Panamera - both in Germany (DUS and MUC) in 2018 (and oops, with Avis, not Hertz). Got up to 215kph in the 911 and 208 in the Panamera on the autobahn.

Worst: Hyundai Getz in TLV in around 2009 as a "mid size"