Sam shut his finger in the car door.

萨姆给车门夹住了手指。

《牛津词典》

Actually the finger is your pace car.

事实上手指相当于你的引导车。

youdao

Apparatus for detecting exterior object between the door of elevator car with glass door and adjacent wall, especially finger apparatus, and elevator equipped with the same.

探测具有玻璃门的电梯轿厢的门和相邻壁之间的外部物体，尤其手指的装置，以及装备有其的电梯。

youdao

The ability to swipe your finger across the car seat to tailor the settings of your radio, heater or air conditioner, or anything else, might help drivers keep their eyes on the road.

FORBES: Written by Bryan Nelson

It means that when you're ripping around the Italian countryside like a fleeing bank robber, with the Huayra's turbo wastegates exploding, tearing the veil with the sound of angels having a mid-air collision, there is somehow a deft, invisible finger holding the car to the pavement.

WSJ: Pagani Huayra Review: If Da Vinci Made a Sports Car | Rumble Seat by Dan Neil

He was using his finger to draw a doodle of a car.

FORBES: My Kindergartner Can 3D Print. So Can Yours.