The roads leading to the trailhead, primarily gravel/dirt, are in good condition and should be fine for any car. They are a little busy though, so when you're driving up keep an eye out for traffic coming quickly downhill. Many of the intersections are marked, which is nice.
The PCT is in good shape with occasional flowers along the way, particularly Indian paintbrush and Tiger Lily. The Three Corner Rock trail is overgrown, but not too bad. There's now a sign where the trail meets the old road bed, making it easier to spot coming back. There are also huckleberries along the trail, but they're not quite in season yet.
Great views! Mt Hood, Mt Adams, Mt Jefferson, and the smaller mountains to the west were all clearly visible, though Mt St Helens and Mt Rainier were obscured by clouds.