When CAMotion had to leave its 14th Street offices about two years ago, the founders had good reason to consider moving from the city to some far-flung suburb. But they had a better reason to stay.”What mattered more than low rents, CAMotion’s executives decided, was staying close to a research center whose resources can help turn an interesting academic idea into a reality . With that in mind, CAMotion leased new space but stayed near Georgia Tech.