Magnatom - as I said, responses failed me at the time although the one that crossed my mind immediately after the event was 'I should have blown them kisses.'
On the Beemer theme, I have a couple of mates you drive BMW's, they cycle and give cyclists plenty of respect - although the proportion of instances involving BM's does seem high in my experience. Still, I've got one pal who recently sold his Boxster. I thought it was becuase he found it impractical in London, the real reason was that at every junction people gave him the international hand signal for onanism.
Anyway, today was much more pleasant and I got out with the chainy later as well, and there was no trouble there either (well, not from motorists, plenty from my legs and lungs!)