One example of its poor construction was that it was more aerodynamic when travelling backwards than when it was being driven forwards.
http://www.telegraph.co.uk/motoring/main.jhtml?xml=/motoring/2008/07/17/mnallegro117.xml
http://www.telegraph.co.uk/motoring/main.jhtml?xml=/motoring/2008/07/17/mnallegro117.xml