The most common and most likely answer to this crossword clue is the 6 plus 3 letter word DINING CAR
I've seen this crossword clue in Financial Times
D
I
N
I
N
G
C
A
R
More clues leading to the result DINING CAR
- In which we may be on track for taking certain courses
- In which rail fare may be taken?
- Refreshing coach in golf clubs secured by Arab money
- First of Aylesbury ducks cooked in Cardigan eatery?
- Department I can ring up for meals on wheels provider
- Fast food outlet?
- It’s for those who like to travel, but not fast
- Noise in good vehicle/carriage
- Where train fare is a racket, loving to cycle round
- Where to eat while training
Buddy explains!

The straight part
We know that "Refreshing coach" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case refreshing coach = dining car.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.