I scraped the bottom the first night I got my 08 Gallardo Spyder. I used to have a Porsche 911 and although very careful, used to scratch the bottom a lot. I thought Gallardo is higher so I did not use the lift system which I regret. Now, everytime I go up or down a driveway, I have to use the lift system. Since then, no more scraping the bottom. So I think it is not a gimmick but a very useful feature for all sport's car.