Video in the link.
I thought it was quite well made.
http://hellforleathermagazine.com/2009/03/optical-illusions-conceal-moto.html#more
very cool
In case anyone is wondering why the bike suddenly veers into the car, the ad is British.
It cuts it off doing a turn.
People only see what they expect to see.
Which is why spring time is an especially dangerous season.