If it has four wheels, Cathy Droz knows what it is, what it does and how to sell it.

She is one of America’s top automotive journalists and marketing consultants and a proud grandmother. She writes a column with her daughter called “Boomer and X,” hosts a successful radio show called “Two for the Road,” and gets to test-drive just about any car on the market.

She talked to Growing Bolder about Detroit’s courtship with drivers over 50 and what boomers are looking for these days in a car.

Plus, any proud grandparent will want to check out her column “Grandma’s Hot Wheels,” in which she recommends cool cars for young grandparents who transport grandchildren.

To check out her column, visit twofortheroadusa.com.

To see more cool cars — from concept to classic — head over to our Vehicles channel!