My wife has a Cannon 5d Mark 3 and is thinking about getting another lens for it. I am trying to convince her to expand her horizons from just taking photos of kids and dogs and venture out into the car world. I know there are some awesome photographers on this site and I was wondering what a good all around lens for photoing cars would be. Looking to do photos at shows, rolling shots , etc... Got a 1k or so budget, so please let me know what you guys think is a good place to start.