Comes to a stop

(Two guys are out driving.)

Suddenly the traffic starts slowing down.

Guy #1: What now?

The car comes/They come to a stop. Two overturned trucks are blocking the road about 250 yards ahead.

Guy #2: There's been an accident.

1) Is 'come to a stop' OK if the traffic doesn't allow them get further?

2) If we're in the car with them, would you say 'the car comes to a stop' or 'they come to a stop'?

3) Would Americans say '250 yards' here or something else?

Thanks.