Welcome to the forum new GTA Z owners!
I've had mine since April, and yeah I've been around the GTA but mostly in the east end considering my location. The most scenic route I've done was to Cobourg, but take the long route, head east on the 401 to Newcastle, go south on Mill Street until you hit Lakeshore Road, take Lakeshore all the way to Cobourg
. Great drive with a very old bridge, train tracks and a view of Lake Ontario almost the entire way, hardly any traffic as well and never did see any cops the 3 times I've done this trip.
Well worth the trip, Cobourg is a great little town to visit with an amazing beach.