Well, the only life i'm planning on having outside of my job is band.
Why do you say you don't think it would be a good job? Because car sales is commission based, and i'd be at a disadvantage for lack of experience?
My singer is a finance manager at a car dealership.
He's also worked sales, recently, at a Harley dealership.
As sales, you have to judge a person quickly on what they're after, otherwise they can eat up your time. You also get straight commission, or a very basic salary, and have a quota to meet to get a bonus check. The Toyota dealership I bought our Camry, I talked to the sales guy at length due to my "inside" knowledge from my singer, and found out that he had to sell 10 cars before he would get a 3K bonus - if he sold 20 cars in a month he'd get a 10K bonus, and, if one sales guy talks to you first, then sends you to someone else - they split the sale - meaning the first guy really has to do nothing to get .5 sold...which counts towards the quota.
As for my singer - working at the HD dealership, he didn't sell much. Try as he might, he wasn't the right personality for the clients...he knew it, they knew it, and so on. He'd been a finance manager for years before then, so he got used to having to be blunt with people...
Now he's a finance manager again, and he works 5 days a week, from 9AM to 9PM. His only days off are Wednesday and Sunday. Even then, he feels it's better for him to be there on Wednesday, so he can keep up with all the paperwork, and get more deals done...which in turn does cut him a better check at the end of the month.
Working in a band, plus doing what he does...is simply too much stress.
If you want to make money at it...enough to live on...then you pretty much are required to not have a life...your job is the life.