Still couldn’t find the actual “really cool road with an overpass and a parking area for a set of mini vehicles.”
But I did find a photo I took of it right after I finished making it several months ago.
I made the parking area especially for this set of vehicles. They aren’t the best of vehicles with the wheels not being able to roll. But they have a good variety and are small and combined with the road/bridge, Boo always play with them for a long time.