how about "stupid bint in a crap car sitting up your arse to really piss you off , trying to come thru but lacks the power so im just gna cut you up and risk the lives of your family and friends for no apparent reason"
then on the back window she could have " now youre behind me at these traffic lights please feel free to get out and kick my teeth in"

p,s i like calibra's really , i used to own one