As far as actual car stuff goes... I, uh, changed the oil. And did rear brakes. And tires (Federal SS595 as 200TW anything feels wasted on me currently).
I also improved this cars' bike carrying abilities.
-Thule fork mount tray, meant for their square bars
-"cross bar" made from 1" square steel bolted to the cockpit brace
-Suction cup for moving panes of glass
The "cross bar" and fork mount stay with the car, the tray attaches to that with a single bolt (or a zip tie in a pinch), and stick it to the trunklid. Takes a minute tops to get it on or off the car and it's rock solid. Can even lock the bike to the roll bar for security!
Previously I just had the fork mount bolted to the cockpit brace itself but, due to the soft plastic that covers it, the bike had quite a bit of side to side sway around corners. Worked fine but it was disconcerting. I also added some eyelets for strapping down my kayak.