They are still at it. Thomas got pulled over today in his Diesel 306, as it was putting out a bit of smoke from the exhaust as he'd over filled the engine oil. We'd drained the excess and Thomas took his car for test drive.
So yes it was putting out a fair bit of smoke, hence the reason he was on a back road (out in the country). Mr PC pulled him over and said the exhaust was too loud and if the noise test team were nearby he'd have them check the volume. They were not available, shame, as I would have loved to have popped up and watched them.