Pressure pushing MEMS

'where all 2008 model year cars and light trucks must have TPMS devices installed to warn of underpressure.'

This is an interesting statement.. what legislation has provoked this?...and if this can be legislated for... why not more efficient engines...sensible vehicles ..say minimum with in passenger vehicles..?

I was driving home tonight (in UK) and heard on the radio an obnoxious ad' trying to pursuade under-endowed imbeciles to buy the Hummer (now available in the UK)...just what we don't need on our narrow roads..or in Harlow at 5pm....