I work at a Ford dealer. Yes the cars do get driven "spiritedly" by the staff. No, it will have absolutely no negative effect on the car. Every car on the lot gets the same treatment, and there never are any ill effects unless it is broken to begin with. The Internet loves to think elaborate break in "procedures" are necessary. They aren't. It's all hearsay and nobody has ever proven that on a modern car they have any possible measurable effect.