My parents use the Nissan these days and I only took it for a drive after like a year, and when I was on the HW going at 65 miles and in speed control, it felt like once every minute or so it kind of lurched forward ever so slightly.

I have exhaust leaks so if this was the engine surging, I would expect to hear the difference right away, but it was nice and quiet, just felt like a little tug. A very odd feeling. Could it be coming from worn front struts?

 

i would say u were felling the auto throttle from the CC, could have been an odd hill or confusing throttle response.

 

If its a cabled throttle then the cable may have slack in it. Mine did.

I adjusted and was tons better.

if I understand your issue correctly, my thoughts are on the cable slack.

 

No, this is a "drive by wire" sort of thing. A computer brain, dammit. Hate those things, they always have a mind of their own. Love old school cables!