Quite impressive.

New threads started: 6, of which
2 were off-topic, so a mere 66.7%% success rate.
3 were directly related to cars, making it 75%% of the on-topic threads
started
1 was followed up by Doug (so far)

Not forgetting:
Number of contributions to other threads, including all those he started
previously: 0
Should we be thankful for that, or just assume that Doug doesn't care what
anyone else thinks, daren't answer any of the follow-up questions, lest he
show himself up as an inconsistent, deluded fool, or has accepted that his
arguments fall over at the merest puff of counter-argument?