Here are a few favorites from the Queen Bee series:
Grams drives a Cadillac Fleetwood, which is a lot of car for such a tiny woman, but she needs the extra armor now that her driving ability isn’t what it used to be. She's clipped the police chief's vehicle more than once. Thankfully, she hasn't been caught yet.
Amateur sleuth, Story Fischer, drives a vintage blue pickup truck, which comes in handy when she needs to transport beehives or load up the back with local apples for her grocery store, The Wild Clover.
What other protagonists value their rides? And no one better say Stephanie Plum, cuz she trashes every single one she drives:)