What's your criteria for worst performing? Cadillac had the highest average transaction price of any brand in 2015 and while their sales aren't huge, they're im

What's your criteria for worst performing? Cadillac had the highest average transaction price of any brand in 2015 and while their sales aren't huge, they're immensely profitable. http://gmauthority.com/blog/2016/04/cadillac-contributed-roughly-15-billion-in-revenue-1-1-billion-in-profit-for-gm-in-2015/ http://gmauthority.com/blog/2016/04/cadillac-contributed-rou...