Interesting legal point

http://news.bbc.co.uk/1/hi/england/humber/7394355.stm
A man was arrested on suspicion of attempted murder after a police officer was injured trying to stop a stolen vehicle in East Yorkshire.

• Police spotted a stolen minibus being driven in a "dangerous and reckless" manner in Beverley. The officer suffered nose and face injuries as the driver twice refused to stop before a stinger device was used. *
  
• Chief Superintendent Paul Davison, of Humberside Police, said: "Driving of this type in such a large vehicle can be more lethal than carrying a weapon."*
  
  

So why, when a cyclist is the victim of a hit-and-run, does the driver get charged with 'careless driving' or somesuch? Why when a driver hits a policeman does it get bumped up to attempted murder?

Perhaps Vinz (or anyone else) can directly quote Ch. Supt. Davison when they discuss any future action against drivers that run cyclists over.