It may seem a little silly, but what kind of car a character drives is an important signal to the reader. Among other things, it can give the reader information about the character's values, his preferences, and his personality.
The cliche car for book and TV and movie heroes is the Mustang, usually a vintage model. I imagine that goes back to that great Steve McQueen movie Bullit in which he drove the hell out of a dark green one all over San Francisco.
I like Mustangs, but I didn't want Rose to be driving a cliche so the Mustang was out. What I wanted was something that would go along with his tough exterior/tender interior makeup, and something that would make a statement about his ordinariness (just plain Joe), his independence, and his individuality.
Camaros and Firebirds of that late '60s early '70s era are nice, but they just didn't seem right for Rose. I also like Pontiac GTO's but again, for some reason I couldn't picture Rose behind the wheel of one. Joe's cool, but a GTO would maybe be too cool for him. The early '70s Dodge Charger with its brutish hemi is a little more yeoman like in the cool department, which would be good for Joe, but the name itself would suggest that it's the steed for some kind of white knight dude, which Joe is definitely not. At least the knight part.
As I was thinking this over, I remembered a car my son had owned when he was stationed at Shaw AFB in South Carolina in the early '80s. A nice Maverick two door with 302 V8 engine that was manufactured in Cleveland. It was a solid car and, because it was the Ford replacement for the old and light bodied Falcon, it was pretty fast for the time.
The novel is set in Nashville in the music industry. There are plenty of singers and songwriters who've made their names and established their reputations in Music City as mavericks. You might think of Hank Sr., or Waylon, or Willie. or maybe Kristofferson.
There is even one country group called the Mavericks. Their lead singer is Raul Malo who's been on his own recently, but I understand there's a chance they may do a reunion tour this summer.
Here are the Mavericks with lead singer Raul Malo singing "There Goes My Heart," live in Austin, Texas.
P.S. I've been selling quite a few books since before Christmas, mostly in the Kindle format. I think the $.99 price point has helped a lot in getting readers interested, and they are apparently spreading the word. Don't get me wrong. You won't find Blood Country on the Amazon or the NYT best seller lists. At least not yet. But I'm working on it.