I don't like this gas pump credit card thing at all.

Last night I stopped to fill up at my usual gas place.
It has been insert and remove Visa card quickly for the bar stripe read.
I didn't notice, but apparently they have changed to a "chip reader" or something.
The card wouldn't come out.
WTH?
The damned thing would not let go of my card till it was "authorized".
"Do not remove card" it said.
Now this may all be well and good in normal practice.
But what happens if it malfunctions and won't let go of my card?
Or if it is stolen, does it eat the card?