My most recent ex always liked the fact I drove a truck, which I recently upgraded to a Toyota Tundra. She said driving a big truck suits me. I'm only 5'9 but muscular and I enjoy doing outdoor stuff and make good use of the truck bed. It's a matter of your vehicle fitting your personality. For example if you own a sports car, doing some track days or maybe some illegal racing would explain why you have one. Don't just have one and have no real reason for it other than to "get women". That's a turnoff and they'll sniff that right out.