Yes, the vintage cars are always interesting.
I also noticed the yellow Reliant Bond Bug. (partially visible in the background) I think that one also attended the Birkenhead Park festival of transport in September.
Good to see them out again.
Although it was dull when I was there today, as you say the rain mainly held off which was great. It just started to rain lightly as I was leaving. Back in 2009, it was blowing a gale and many of my photos were ruined due to rain on the lens. Fortunately that did not happen this time.
I do hope one day it will be sunny for them though. (photos always seem to come out better in the sun)
EDIT: Of course I couldn't resist taking a few casual B&W shots.
Q: What year is this?