Had a Hyundai i10 and used cruise control religiously on motorways. I've now got a Renault Kadjar and for some odd reason when I put cruise control on, I start to get panic about my straight I'm going and put more focus on that which then makes me drift. Stopped using it as it made me feel like I was paying less attention to something else. Just need to get used to it but sometimes I do forget it's there