Brian Blandford ) gurgled happily, sounding much
like they were saying :

Six weeks ago I saw a middle aged man driving a large sofa at about 20
mph turn into Oxford Street and go East towards Oxford Circus. It has
taken this length of time to convince myself that what I saw was real.

Was I hallucinating?

While it is entirely possible that you were hallucinating, it's not
entirely impossible...

http://www.cummfybanana.com/cars/car_casuallofa.htm