The most common and most likely answer to this crossword clue is the 4 plus 3 letter word USED CAR
I've seen this crossword clue in The Guardian
U
S
E
D
C
A
R
More clues leading to the result USED CAR
- In which American raced buggy?
- Went for a drive; may it have been clocked?
- Leaving outskirts, caused carnage driving this?
- Red sauce mostly transported in a crate?
- Sort of salesman running crusade
- Banger and mash crusade
- American cedar chopped up to make crate?
- Probably not the vehicle of choice for organised crusade
- Secondhand automobile surprisingly raced us
- Secondhand automobile America cared about
Buddy explains!

The straight part
We know that "driving this?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case driving this? = used 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.