http://www.worldwidewords.org/qa/qa-aun1.htm

You said "Taking a caravan (untaxed and often uninsured, and definitely gas-guzzling)".

Your obvious attempt at meaning was to imply that others were put at risk by the absence of insurance. It's an obvious attempt to conflate "uninsured caravan" with "uninsured driver".

You can't un-say it Steve.