No one else makes this system becasue it's not fail proof. Ask you guy how many litigations they lost becasue of SAS. If it were that good, everyone would have it. Also, there is a mandatory inspection to be performed at your cost every, I think, 150 hours. Also, it's very exspensive to replace and repair. That system is about $3,200 USD plus labor. Bottom line, there is no substitute for common sense. Spend the extra money and hire a responsible driver, that money is a far better investment than that system. Don't be sold, be educated.