These things can happen at any time to any of us while riding. The people involved in this case have a high profile in British cycling, and the ever vigilant English media will jump on anything that might sell newspapers, websites and television ads.
Interesting that there is a strong Australian connection with this pairing -- Wiggins had an Australian father (even though the son disowned him) and Sutton was one of Australia's earliest TdF riders.
And yes, Top Gear does have its good moments, but I'm finding it increasingly boring and trite because it centres almost entirely on performance cars and driving that can only be done on a race track... that is, it is so far removed from reality, it's ridiculous.