dothetest.co.uk, is the Transport for London site which brought you the urbanised inattentional blindness video. Now they’re back with a feast of change blindness-YouTube goodness, here, here, and here.
The moral is the same, and evidence-based: even large things can be hard to spot if you don’t know they are there, so look out for cyclists.
Mind Hacks 
Another interesting test about why you should not use your cell phone while driving…
http://www.dft.gov.uk/drivingchallenge/