The term "convertible version" refers to a type of vehicle that can be easily converted from one form or function to another. In the context of cars, it typically means a car with an open-top design that can be quickly folded down into a closed position using a manual or automatic mechanism. The convertible version of a car offers all the benefits and features of a regular vehicle but also provides the added convenience and enjoyment of being able to drive with the top down, allowing for greater exposure to fresh air and sunlight while on the road.