A fictitious automobile owned by people who don't own a car and/or are incapable of driving.
Annie: Hey, let's go out for pizza.
Bob: Sure, I'll come right over to pick you up in my Dodge Imagine.
Sushiing (pronounced "sue shing") means eating sushi or going out for sushi.
Her status message says she's sushiing.
Hey, let's go sushiing later!