Hi, I picked up my longitude Automatic on Wednesday, when stopped at lights, as soon as I take the foot off the break, the car starts to roll backwards? Is this something to do with the stop/start function, should I be putting the car into park or something? Sorry if this is a dumb question, my previous car was an old wee nissan micra (also automatic) and I never had any issues with it. I am worried that I am going to end up rolling right back into the car behind. Thanks in advance for any help.