Own a convertible sports car.

拥有一辆敞蓬跑车。

youdao

Her own car is a convertible VW.

她的车是一辆大众敞篷汽车。

《柯林斯英汉双解大词典》

The vinyl-covered roof was originally designed to give the appearance of a convertible to models with a fixed roof, but eventually it evolved into a styling statement in its own right.

涂覆乙烯基的车顶最初的设计宗旨是赋予固定车顶车型以敞篷车的外观，但是最终这一装置演化成了特立独行的风尚宣言。

youdao

Hong Kong remains a separate customs area, with its own fully convertible currency.

ECONOMIST: Light on its feet

This entitles you to twin bunk beds (seats by day, convertible at night), your own bathroom, a whole lot of tiny folded towels Amtrak doesn't give you much but they love to give you towels a fold-down table with a checkerboard on the surface and an incomparable feeling of coziness and well-being.

WSJ: Train Travel: Adventure on the Rails