My car usually has a less-than-fresh smell.
Okay--more often than not, it's an absolute pigsty.
I discovered a clever "scent solution" on my way home from a yard sale today. I picked up (slightly used) Yankee jar candle from the free box and popped it in the cup holder for transport.
Next time I got in my car, mmmmm!
The trapped heat had softened the candle, releasing the wonderful fruity smell into the air. I still have to clean out the crumbs and gym shoes, but at least I won't have buy one of those pine tree things from the nearest truck stop.